2021-06-02 08:54:12

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HotelManage
{
    class Hotel
    {
        public string No { get; set; }
        public string Name { get; set; }
        public string Address { get; set; }
        public string Type { get; set; }

        public Hotel()
        {

        }
        public Hotel(string No, string Name, string Address, string Type)
        {
            this.No = No;
            this.Name = Name;
            this.Address = Address;
            this.Type = Type;
        }
        public void Input()
        {
            Console.WriteLine("Nhap Ma Khach San:");
            No = Console.ReadLine();
            Console.WriteLine("Nhap Ten Khach San:");
            Name = Console.ReadLine();
            Console.WriteLine("Nhap Dia Chi:");
            Address = Console.ReadLine();
            Console.WriteLine("Nhap Loai Khach San:");
            Type = Console.ReadLine();
            Console.WriteLine("Nhap So Phong Can Them:");
            int N = Convert.ToInt32(Console.ReadLine());

        }
    }
}



##HotelManage

2021-06-02 08:49:22

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace customer
{
    class customer
    {
        public string cmnd { get; set; }
        public string HovaTen { get; set; }
        public int Age { get; set; }
        public string Gender { get; set; }
        public string Address { get; set; }

        public customer()
        {

        }
        public customer(string cmnd, string Fullname, int Age, string Gender, string Address)
        {
            this.cmnd = cmnd;
            this.HovaTen = HovaTen;
            this.Age = Age;
            this.Gender = Gender;
            this.Address = Address;
        }
        public void Input()
        {
            Console.WriteLine("Nhap :");
            cmnd = Console.ReadLine();
            InputWithcmnd();
        }
        public void InputWithcmnd()
        {
            Console.WriteLine("Nhap Ho Ten:");
            HovaTen = Console.ReadLine();
            Console.WriteLine("Nhap Tuoi:");
            Age = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap Gioi Tinh:");
            Gender = Console.ReadLine();
            Console.WriteLine("Nhap Dia Chi:");
            Address = Console.ReadLine();
        }
        public void Display()
        {
            Console.WriteLine("Thong tin Khach Hang: (Ho Ten : {0}, Tuoi : {1},  : {2}, Gioi Tinh : {3}, Dia Chi : {4})", HovaTen, Age, cmnd, Gender, Address);
        }
    } // class

}

## khachhanghotel

2021-06-02 08:23:25

#Book.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hotel
{
    class Book
    {
        int CheckIn { get; set; }
        int CheckOut { get; set; }
        public string CMTND { get; set; }
        public string HotelNo { get; set; }
        public string RoomNo { get; set; }

        public Book()
        {

        }
        public Book(int CheckIn, int CheckOut, string CMTND, string HotelNo, string RoomNo)
        {
            this.CheckIn = CheckIn;
            this.CheckOut = CheckOut;
            this.CMTND = CMTND;
            this.HotelNo = HotelNo;
            this.RoomNo = RoomNo;
        }
        public void Input(List<Customer> customerList, List<Hotel> hotelList)
        {
            Console.WriteLine("Nhap CMTND Cua Khach Hang");
            CMTND = Console.ReadLine();
            bool isFind = false;
            for (int i = 0; i < customerList.Count; i++)
            {
                if (customerList[i].CMTND.Equals(CMTND))
                {
                    isFind = true;
                    break;
                }
            }

            if (!isFind)
            {
                Console.WriteLine("Khach Hang Khong Ton Tai! Nhap Moi:");
                Customer customer = new Customer();
                customer.CMTND = CMTND;
                customer.InputWithCMTND();
            }

            DisplayHotelMenu(hotelList);
            Hotel hotel = null;
            while (true)
            {
                HotelNo = Console.ReadLine();
                isFind = false;
                for (int i = 0; i < hotelList.Count; i++)
                {
                    if (hotelList[i].No.Equals(HotelNo))
                    { 
                        isFind = true;
                        hotel = hotelList[i];
                        break;
                    }
                }
                if (!isFind)
                {
                    break;
                }
                else
                {
                    Console.WriteLine("Nhap Lai Ma Khach San!");
                }

            }

            DisplayRoomMenu(hotel);
            while (true)
            {
                RoomNo = Console.ReadLine();
                isFind = false;

                for (int i = 0; i < hotel.roomList.Count; i++)
                {
                    if (hotel.roomList[i].No.Equals(RoomNo))
                    {
                        isFind = true;
                        break;
                    }
                }
                if (!isFind)
                {
                    break;
                }
                else
                {
                    Console.WriteLine("Nhap Lai Ma Phong Khach San!");
                }
            }
            Console.WriteLine("Nhap Ngay Dat Phong:");
            CheckIn = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap Ngay Tra Phong:");
            CheckOut = Convert.ToInt32(Console.ReadLine());
        }
        public void DisplayHotelMenu(List<Hotel> hotelList)
        {
            for (int i = 0; i < hotelList.Count; i++)
            {
                Console.WriteLine("{0}. - {1} - {2}", i+1, hotelList[i].Name, hotelList[i].No);
                
            }
            Console.WriteLine("Nhap Ma Khach San Can Chon:");
        }
        public void DisplayRoomMenu(Hotel hotel)
        {
            for (int i = 0; i < hotel.roomList.Count; i++)
            {
                Console.WriteLine("{0}. - {1} - {2}", i + 1, hotel.roomList[i].Name, hotel.roomList[i].No) ;

            }
            Console.WriteLine("Nhap Ma Phong Can Chon:");
        }
    }
}

#Customer.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hotel
{
    class Customer
    {
        public string CMTND { get; set; }
        public string Fullname { get; set; }
        public int Age { get; set; }
        public string Gender { get; set; }
        public string Address { get; set; }

        public Customer()
        {

        }
        public Customer(string CMTND, string Fullname, int Age, string Gender, string Address)
        {
            this.CMTND = CMTND;
            this.Fullname = Fullname;
            this.Age = Age;
            this.Gender = Gender;
            this.Address = Address;
        }
        public void Input()
        {
            Console.WriteLine("Nhap CMTND:");
            CMTND = Console.ReadLine();
            InputWithCMTND();
        }
        public void InputWithCMTND()
        {
            Console.WriteLine("Nhap Ho Ten:");
            Fullname = Console.ReadLine();
            Console.WriteLine("Nhap Tuoi:");
            Age = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap Gioi Tinh:");
            Gender = Console.ReadLine();
            Console.WriteLine("Nhap Dia Chi:");
            Address = Console.ReadLine();
        }
        public void Display()
        {
            Console.WriteLine("Thon tin Khach Hang: (Ho Ten : {0}, Tuoi : {1}, CMTND : {2}, Gioi Tinh : {3}, Dia Chi : {4})", Fullname, Age, CMTND, Gender, Address);
        }
    }
}

#Hotel.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hotel
{
    class Hotel
    {
        public string No { get; set; }
        public string Name { get; set; }
        public string Address { get; set; }
        public string Type { get; set; }
        public List<Room> roomList = new List<Room>();
        public Hotel()
        {

        }
        public Hotel(string No, string Name, string Address, string Type)
        {
            this.No = No;
            this.Name = Name;
            this.Address = Address;
            this.Type = Type;
        }
        public void Input()
        {
            Console.WriteLine("Nhap Ma Khach San:");
            No = Console.ReadLine();
            Console.WriteLine("Nhap Ten Khach San:");
            Name = Console.ReadLine();
            Console.WriteLine("Nhap Dia Chi:");
            Address = Console.ReadLine();
            Console.WriteLine("Nhap Loai Khach San:");
            Type = Console.ReadLine();
            Console.WriteLine("Nhap So Phong Can Them:");
            int N = Convert.ToInt32(Console.ReadLine());
            for (int i = 0; i < N; i++)
            {
                Room room = new Room();
                room.Input();
                roomList.Add(room);
            }
        }
        public void Display()
        {
            Console.WriteLine("Hotel(Ten Khach San : {0}, Dia Chi : {1}, Loai Khach San : {2})", Name, Address, Type);
            for (int i = 0;i < roomList.Count; i++)
            {
                roomList[i].Display();
            }
        }
        public void DisplayBase()
        {
            Console.WriteLine("Hotel(Ten Khach San : {0}, Dia Chi : {1}, Loai Khach San : {2})", Name, Address, Type);
            
        }
    }
}

#Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hotel
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Customer> customerList = new List<Customer>();
            List<Hotel> hotelList = new List<Hotel>();
            List<Book> bookList = new List<Book>();
            int choose;

            do
            {
                showMenu();
                choose = Convert.ToInt32(Console.ReadLine());

                switch (choose)
                {
                    case 1:
                        Input(hotelList);
                        break;
                    case 2:
                        Display(hotelList);
                        break;
                    case 3:
                        InputBook(hotelList,customerList,bookList);
                        break;
                    case 4:
                        SearchAvailableBook(hotelList, bookList);
                        break;
                    case 5:
                        Statistic(bookList, hotelList);
                        break;
                    case 6:
                        Search(bookList, hotelList);
                        break;
                    case 7:
                        Console.WriteLine("Thoat!!!");
                        break;
                    default :
                        Console.WriteLine("Nhap Lai!!");
                        break;
                }
            } while (choose!=7);
        }

        static void Input(List<Hotel> hotelList)
        {
            Console.WriteLine("Nhap So Khach San Can Them:");
            int N = Convert.ToInt32(Console.ReadLine());
            for(int i = 0; i < N; i++)
            {
                Hotel hotel = new Hotel();
                hotel.Input();

                hotelList.Add(hotel);
            }
        }
        static void Display(List<Hotel> hotelList)
        {
            for (int i = 0; i < hotelList.Count; i++)
            {
                hotelList[i].Display();
            }
        }
        static void InputBook(List<Hotel> hotelList, List<Customer> customerList, List<Book> bookList)
        {
            Book book = new Book();
            book.Input(customerList, hotelList);
            bookList.Add(book);
        }
        static void SearchAvailableBook(List<Hotel> hotelList, List<Book> bookList)
        {
            int checkIn;
            int checkOut;
            Console.WriteLine("Nhap Ngay Dat Phong:");
            checkIn = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("Nhap Ngay Tra Phong:");
            checkOut = Convert.ToInt32(Console.ReadLine());

            for (int i = 0; i < hotelList.Count; i++)
            {
                hotelList[i].DisplayBase();
                Console.WriteLine("Danh Sach Phong Trong:");
                List<Room> rooms = new List<Room>();
                for (int j = 0; j < rooms.Count; j++)
                {
                    if (checkA(bookList, hotelList[i].No, rooms[j], checkIn, checkOut))
                    {
                        rooms[j].Display();
                    }
                }
            }
        }
        static bool checkA(List<Book> bookList, Room room, int checkIn, int checkOut, string roomNo, string hotelNo)
        {
            for (int i = 0; i < bookList.Count; i++)
            {
                Book book = bookList[i];
                if (book.HotelNo.Equals(hotelNo) && book.RoomNo.Equals(roomNo) && (book.CheckIn  >= checkIn && book.CheckIn <= checkOut) || (book.CheckIn >= checkIn && book.CheckOut <= checkOut))
                {
                    return false;
                }
            }
            return true;
        }
        static int Calculate(List<Book> bookList, Hotel hotel )
        {
            int total = 0;
            for (int i = 0; i < bookList.Count; i++)
            {
                if (bookList[i].HotelNo.Equals(hotel.No))
                {
                    int price = GetMoney(hotel.roomList, bookList[i].RoomNo);
                    total += price * (bookList[i].CheckOut) - bookList[i].CheckIn;
                }
            }
            return total;
        }
        static int GetMoney(List<Room> roomList, string roomNo)
        {
            for (int i = 0; i < roomList.Count; i++)
            {
                if (roomList[i].No.Equals(roomNo))
                {
                    return roomList[i].Price;
                }
            }
            return 0;
        }
        static void Statistic(List<Book> bookList, List<Hotel> hotelList)
        {
            for (int i = 0; i < hotelList.Count; i++)
            {
                int total = Calculate(bookList, hotelList[i]);
                Console.WriteLine("{0}. {1} - Doanh Thu : {2}", i + 1, hotelList[i].Name, total);
            }
        }
        static void Search(List<Book> bookList, List<Hotel> hotelList)
        {
            Console.WriteLine("Nhap CMTND Can Tim Kiem:");
            string cmtnd = Console.ReadLine();
            for (int i = 0; i < bookList.Count; i++)
            {
                if (bookList[i].Equals(cmtnd))
                {
                    Hotel hotel = GetHotelByNo(hotelList, bookList[i].HotelNo);
                    if (hotel!=null)
                    {
                        hotel.DisplayBase();
                    }
                }
            }
        }
        static Hotel GetHotelByNo(List<Hotel> hotelList, string hotelNo)
        {
            for (int i = 0; i < hotelList.Count; i++)
            {
                if (hotelList[i].No.Equals(hotelNo))
                {
                    return hotelList[i];
                }
            }
            return null;
        }
        static void showMenu()
        {
            Console.WriteLine("1.Nhap Thong Tin Khach San");
            Console.WriteLine("2.Hien Thi Thong Tin Khach San");
            Console.WriteLine("3.Dat Phong");
            Console.WriteLine("4.Tim Phong Con Trong");
            Console.WriteLine("5.Thong Ke Doanh Thu");
            Console.WriteLine("6.Tim Kiem Thong Tin Khach Hang");
            Console.WriteLine("7.Thoat!!!");
            Console.WriteLine("Lua Chon:");
        }
    }
}

#Room.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Hotel
{
    class Room
    {
        public string Name { get; set; }
        public int Price { get; set; }
        public int Floor { get; set; }
        public int PersonalMax { get; set; }
        public string No { get; set; }

        public Room()
        {

        }
        public Room(string Name, int Price, int Floor, int PersonalMax, string No)
        {
            this.Name = Name;
            this.Price = Price;
            this.Floor = Floor;
            this.PersonalMax = PersonalMax;
            this.No = No;
        }
        public void Input()
        {
            Console.WriteLine("Nhap Ten Phong:");
            Name = Console.ReadLine();
            Console.WriteLine("Nhap Gia:");
            Price = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap So Tang:");
            Floor = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap So Nguoi Toi Da:");
            PersonalMax = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap Ma Phong:");
            No = Console.ReadLine();
        }
        public void Display()
        {
            Console.WriteLine("Room (Ten Phong : {0}, Gia Phong : {1}, So Tang : {2}, So Nguoi Toi Da : {3}, Ma Phong : {4} )", Name, Price, Floor, PersonalMax, No);
        }
    }
}

2020-07-01 04:38:55

using System;
using System.Collections.Generic;
using System.Net;
using System.Text;

namespace HotelManager
{
    class Test
    {
        static void menu()
        {
            Console.WriteLine("1.Enter hotel infomation ");
            Console.WriteLine("2.Show hotel infomation ");
            Console.WriteLine("3.Booking ");
            Console.WriteLine("4.Find empty room ");
            Console.WriteLine("5.Hotel revenue statistics");
            Console.WriteLine("6.Find customer infomation ");
            Console.WriteLine("7.Exit");

        }
        static void HotelInput(List<Hotel> ListHotel)
        {
            Console.WriteLine("How many hotel you want to enter ? :");
            int n = int.Parse(Console.ReadLine());
            bool flag = true;

            for (int i = 0; i < n; i++)
            {

                Console.WriteLine("Enter {0} hotel.", (i + 1));

                Console.WriteLine("Enter hotel number : ");
                string HotelNumber = Console.ReadLine();
                bool flag_side = true;
                for (int j = 0; j < ListHotel.Count; j++)
                {
                    if (HotelNumber == ListHotel[j].HotelNumber)
                    {
                        Console.WriteLine("Hotel is exists!");
                        flag_side = false;
                    }


                }
                if (flag_side == true) {
                    Hotel hotel = new Hotel();
                    hotel.input(HotelNumber);
                    ListHotel.Add(hotel);
                }

            }
        }
        static void HotelDisplay(List<Hotel> ListHotel)
        {
            int ArrayLength = ListHotel.Count;
            for (int i = 0; i < ArrayLength; i++)
            {
                ListHotel[i].display();
            }
        }
        static void Booking(List<Hotel> ListHotel, List<Book> ListBook, List<Customer> ListCustomer)
        {

            Console.WriteLine("Enter booking infomation.");
            Console.WriteLine("Enter hotel number :");
            string HotelNumber = Console.ReadLine();
            int ListHotel_Size = ListHotel.Count;
            string RoomNum = "";
            bool flag = false;

            for (int i = 0; i < ListHotel_Size; i++)
            {
                if (HotelNumber == ListHotel[i].HotelNumber)
                {
                    flag = true;
                }
                if (flag == true)
                {
                    while (true)
                    {
                        Console.WriteLine("Enter room number :");
                        RoomNum = Console.ReadLine();
                        int listRoomSize = ListHotel[i].ListRooms.Count;
                        int j;
                        for (j = 0; j < listRoomSize; j++)
                        {
                            if (RoomNum == ListHotel[i].ListRooms[j].RoomNumber)
                            {
                                break;
                            }
                        }
                        if (j == listRoomSize)
                        {
                            Console.WriteLine("Your room is not exists!");

                        }
                        else
                        {
                            break;
                        }
                    }
                }
            }
            if (flag == false)
            {
                Console.WriteLine("Your hotel number is not exists!");
            }
            else
            {
                bool flag_1 = true;
                for (int i = 0; i < ListBook.Count; i++)
                {
                    if (RoomNum == ListBook[i].RoomNumber && HotelNumber == ListBook[i].HotelNumber)
                    {
                        Console.WriteLine("Room has been booked!");
                        flag_1 = false;
                    }

                }
                if (flag_1 == true)
                {
                    Console.WriteLine("Enter customer social number :");
                    string SocialNumber = Console.ReadLine();
                    bool flag_2 = true;
                    for (int i = 0; i < ListCustomer.Count; i++)
                    {
                        if (SocialNumber == ListCustomer[i].SocialNumber)
                        {
                            flag_2 = false;
                        }
                    }
                    if (flag_2 == true)
                    {
                        Customer customer = new Customer();
                        customer.input(SocialNumber);
                        ListCustomer.Add(customer);
                    }
                    Console.WriteLine("Enter date booking :");
                    string DateBooking = Console.ReadLine();
                    Console.WriteLine("Enter date leaving : ");
                    string DateLeave = Console.ReadLine();
                    Book book = new Book();
                    book.input(DateBooking, DateLeave, SocialNumber, HotelNumber, RoomNum);
                    BookedRoom bookedRoom = new BookedRoom(DateBooking, DateLeave, SocialNumber, RoomNum);
                    for (int i = 0; i < ListHotel_Size; i++) {
                        if (ListHotel[i].HotelNumber == HotelNumber) {
                            ListHotel[i].ListBookedRooms.Add(bookedRoom);
                        }
                    }
                    ListBook.Add(book);
                }
            }
        }
        static void UnAvailableRoom(List<Hotel> ListHotel) {
            for (int i = 0; i < ListHotel.Count; i++) {
                Console.WriteLine("Hotel {0} ",ListHotel[i].HotelNumber);
                Console.WriteLine("--Booked room : ");
                if (ListHotel[i].ListBookedRooms.Count == 0) {
                    Console.WriteLine("All room is available!");
                }
                for (int j = 0; j < ListHotel[i].ListBookedRooms.Count; j++) {                 
                    ListHotel[i].ListBookedRooms[j].display();
                    for (int k = 0; k < ListHotel[i].ListRooms.Count; k++) {
                        if (ListHotel[i].ListBookedRooms[j].RoomNumber != ListHotel[i].ListRooms[k].RoomNumber) {
                            Console.WriteLine("Room available : {0}",ListHotel[i].ListRooms[k].RoomNumber);
                        }
                    }
                }             
            }
        }
        static void StaticMoney(List<Hotel> ListHotel) {

            for (int i = 0; i < ListHotel.Count; i++) {
                Console.WriteLine("Hotel {0} money static : ", ListHotel[i].HotelNumber);
                float total = 0;
                for (int j = 0; j < ListHotel[i].ListRooms.Count; j++) {
                    for (int k = 0; k < ListHotel[i].ListBookedRooms.Count;k++) {
                        if (ListHotel[i].ListRooms[j].RoomNumber == ListHotel[i].ListBookedRooms[k].RoomNumber) {
                            total += ListHotel[i].ListRooms[j].Price;
                        }
                    }
                }
                Console.Write("{0}\n", total);
            }
        }
        static void FindCustomer(List<Customer> ListCustomer) {
            Console.WriteLine("Enter customer social number : ");
            string SocialNum = Console.ReadLine();
            for (int i = 0; i < ListCustomer.Count; i++) {
                if (SocialNum == ListCustomer[i].SocialNumber) {
                    ListCustomer[i].display();
                }
            }
        }
        static void Main(string[] args)
        {

            List<Hotel> ListHotel = new List<Hotel>();
            List<Book> ListBook = new List<Book>();
            List<Customer> ListCustomer = new List<Customer>();
            while (true)
            {
                menu();
                int choice = int.Parse(Console.ReadLine());
                switch (choice)
                {
                    case 1:
                        HotelInput(ListHotel);
                        break;
                    case 2:
                        HotelDisplay(ListHotel);
                        break;
                    case 3:
                        Booking( ListHotel,  ListBook, ListCustomer);
                        for (int i = 0; i < ListBook.Count; i++) {
                            ListBook[i].display();
                        }
                        break;
                    case 4:
                        UnAvailableRoom(ListHotel);
                        break;
                    case 5:
                        StaticMoney(ListHotel);
                        break;
                    case 6:
                        FindCustomer(ListCustomer);
                        break;
                    case 7:
                        return;
                }
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace HotelManager
{
    class BookedRoom
    {
        public string DateBooking { get; set; }
        public string DateLeave { get; set; }
        public string SocialNumberCustomer { get; set; }
        public string RoomNumber { get; set; }

        public BookedRoom(string dateBooking, string dateLeave, string socialNumberCustomer, string roomNumber)
        {
            DateBooking = dateBooking;
            DateLeave = dateLeave;
            SocialNumberCustomer = socialNumberCustomer;
            RoomNumber = roomNumber;
        }

        public BookedRoom()
        {
        }
        public void display() {
            Console.WriteLine("---Date booked : {0} , Date leave : {1} , Customer social number : {2} , Room number : {3}",DateBooking,DateLeave,SocialNumberCustomer,RoomNumber);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace HotelManager
{
    class Book
    {
        public string DateBooking { get; set; }
        public string DateLeave { get; set; }
        public string SocialNumberCustomer { get; set; }
        public string HotelNumber { get; set; }
        public string RoomNumber { get; set; }

        public Book(string dateBooking, string dateLeave, string socialNumberCustomer, string hotelNumber, string roomNumber)
        {
            DateBooking = dateBooking;
            DateLeave = dateLeave;
            SocialNumberCustomer = socialNumberCustomer;
            HotelNumber = hotelNumber;
            RoomNumber = roomNumber;
        }

        public Book()
        {
        }
        public void input(string dateBooking, string dateLeave, string socialNumberCustomer, string hotelNumber, string roomNumber) {
            DateBooking = dateBooking;
            DateLeave = dateLeave;
            SocialNumberCustomer = socialNumberCustomer;
            HotelNumber = hotelNumber;
            RoomNumber = roomNumber;
        }
        public void display()
        {
            Console.WriteLine("Date booking : {0} , Date leaving : {1} , Customer social number : {2} , Hotel number : {3} , Room number : {4}", DateBooking, DateLeave, SocialNumberCustomer, HotelNumber,RoomNumber);

        }
    }
}

using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
using System.Runtime.Serialization;
using System.Text;

namespace HotelManager
{
    class Room
    {
        public string RoomName { get; set; }
        public float Price { get; set; }
        public int Floor { get; set; }
        public int MaxPeople { get; set; }
        public string RoomNumber { get; set; }
        public string DateBooking { get; set; }
        public string DateLeave { get; set; }
        public Room(string roomName, float price, int floor, int maxPeople, string roomNumber)
        {
            RoomName = roomName;
            Price = price;
            Floor = floor;
            MaxPeople = maxPeople;
            RoomNumber = roomNumber;
        }

        public Room()
        {
        }
        public void input() {

            Console.WriteLine("Room name : ");
            RoomName = Console.ReadLine();
            Console.WriteLine("Price : ");
            Price = float.Parse(Console.ReadLine());
            Console.WriteLine("Floor : ");
            Floor = int.Parse(Console.ReadLine());
            Console.WriteLine("Maximum people : ");
            MaxPeople = int.Parse(Console.ReadLine());
            Console.WriteLine("Room number : ");
            RoomNumber = Console.ReadLine();
        }
        public void display() {
            Console.WriteLine("----Room name : {0} , Price : {1} , Floor : {2} , Maximum people : {3} , Room number : {4}",RoomName,Price,Floor,MaxPeople,RoomNumber);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace HotelManager
{
    class Hotel
    {
        public string HotelNumber { get; set; }
        public string HotelName {get; set;}
        public string Address { get; set; }
        public enum types
        {
            VIP, Normal
        }
        public types HotelType { get; set; }
        public List<Room> ListRooms { get; set; }
        public List<BookedRoom> ListBookedRooms { get; set; }
        public Hotel(string hotelName, string address, types hotelType)
        {
            HotelName = hotelName;
            Address = address;
            HotelType = hotelType;
        }

        public Hotel()
        {
            ListRooms = new List<Room>();
            ListBookedRooms = new List<BookedRoom>();
        }
        public void input(string hotelNumber) {
           
            HotelNumber = hotelNumber;
            Console.WriteLine("Enter hotel name : ");
            HotelName = Console.ReadLine();
            Console.WriteLine("Enter address : ");
            Address = Console.ReadLine();
            Console.WriteLine("Select hotel type : ");
            Console.WriteLine("1.Normal");
            Console.WriteLine("2.VIP");
            int choice = int.Parse(Console.ReadLine());
            if (choice == 2)
            {
                HotelType = types.VIP;

            }
            else 
            {
                HotelType = types.Normal;
            }
            Console.WriteLine("Enter N room : ");
            int n = int.Parse(Console.ReadLine());
            for (int i = 0; i < n; i++) {
                Console.WriteLine("Enter room {0} infomation.", (i + 1));
                Room room = new Room();
                room.input();
                ListRooms.Add(room);
            }
        }

        public void display() {     
            Console.WriteLine("Hotel number : {0} , Hotel name : {1} , Hotel address {2} , Hotel type : {3} ", HotelNumber, HotelName, Address, HotelType);
            int length = ListRooms.Count;
            
            for (int i = 0; i < length; i++)
            {
                ListRooms[i].display();
            }
        }
    }
}

using System;
using System.Security.Cryptography.X509Certificates;

namespace HotelManager
{
    class Customer
    {
        public string SocialNumber { get; set; }
        public string  Name { get; set; }
        public int Age { get; set; }
        public string Gender { get; set; }
        public string HomeTown { get; set; }

        public Customer(string socialNumber, string name, int age, string gender, string homeTown)
        {
            SocialNumber = socialNumber;
            Name = name;
            Age = age;
            Gender = gender;
            HomeTown = homeTown;
        }

        public Customer()
        {
        }
        public void input(string socialNum) {
            
            this.SocialNumber = socialNum;
            Console.WriteLine("Enter name : ");
            this.Name = Console.ReadLine();
            Console.WriteLine("Enter age : ");
            this.Age = int.Parse(Console.ReadLine());
            Console.WriteLine("Enter gender : ");
            this.Gender = Console.ReadLine();
            Console.WriteLine("Enter hometown : ");
            this.HomeTown = Console.ReadLine();
        }
        public void display() {
            Console.WriteLine("Social number : {0} , CustomerName : {1} , Age : {2} , Gender : {3} , HomeTown : {4}", SocialNumber, Name, Age, Gender, HomeTown);
        }
    }
}

2020-06-30 16:46:19

using System;
using System.Globalization;
using System.Collections.Generic;
namespace Qlks
{
    class Program
    {
        static void Main(string[] args)
        {
            int choice = 0;
            do
            {
                Console.WriteLine("Nhap thong tin khach san");
                Console.WriteLine("In toan bo thong tin lien quan toi khach san");
                Console.WriteLine("Nhập thông tin đặt phòng (Book)");
                Console.WriteLine("Nhập vào 1 ngày book và ngày trả phòng, in ra tất cả các phòng có thể đap ứng đc yêu cầu trên");
                Console.WriteLine("In ra tổng tiền mà mỗi khách sạn kiếm được ra màn hình.");
                Console.WriteLine("Nhập Số CMTND khách hàng => In ra tất cả các khách sạn mà khách hàng này đã tới.");
                Console.WriteLine("Thoát chương trình.");
                Console.WriteLine("Your choice : ?");
                choice = int.Parse(Console.ReadLine());
                switch (choice)
                {
                    case 1:
                        Console.WriteLine("Input the number of hotel");
                        int n = int.Parse(Console.ReadLine());
                        for (int i = 0; i < n; i++)
                        {
                            Hotel newHotel = new Hotel();
                            newHotel.Input();
                            DataMgr.Instance.ListHotel.Add(newHotel);
                        }
                        break;
                    case 2:
                        Console.WriteLine("All the hotel information are as below:");
                        for (int i = 0; i < DataMgr.Instance.ListHotel.Count; i++)
                        {
                            Console.WriteLine("Information of hotel number {0}", i + 1);
                            DataMgr.Instance.ListHotel[i].Output();
                        }
                        break;
                    case 3:
                        do
                        {
                            Book newBook = new Book();
                            newBook.input();
                            if (!String.IsNullOrEmpty(newBook.RoomCode))
                            {
                                DataMgr.Instance.ListBook.Add(newBook);
                            }
                            Console.WriteLine("Continue (y/n)");
                        } while (Console.ReadLine().Equals("y"));
                        break;
                    case 4:
                        Console.WriteLine("Input book date");
                        string bookDate = Console.ReadLine();
                        Console.WriteLine("Input return date");
                        string returnDate = Console.ReadLine();
                        List<string> resultList = new List<string>();
                        foreach (Book book in DataMgr.Instance.ListBook)
                        {
                            if (book.BookDate.Equals(bookDate) && book.ReturnDate.Equals(returnDate))
                            {
                                if (!resultList.Contains(book.RoomCode))
                                {
                                    resultList.Add(book.RoomCode);
                                }
                            }
                        }
                        foreach (string room in resultList)
                        {
                            Console.WriteLine(room);
                        }
                        break;
                    case 5:
                        int count = DataMgr.Instance.ListHotel.Count;
                        float[] income = new float[count];
                        for (int i = 0; i < income.Length; i++)
                        {
                            income[i] = 0;
                        }
                        foreach (Book book in DataMgr.Instance.ListBook)
                        {
                            //get index of the hotel
                            int i = DataMgr.Instance.ListHotel.FindIndex(x => x.Code.Equals(book.HotelCode));
                            int j = DataMgr.Instance.ListHotel[i].RoomList.FindIndex(y => y.Code.Equals(book.RoomCode));
                            income[i] += DataMgr.Instance.ListHotel[i].RoomList[j].Price;
                        }
                        for (int i = 0 ; i < count; i++)
                        {
                            Console.WriteLine("Hotel {0}, income : {1}",DataMgr.Instance.ListHotel[i],income[i]);
                        }
                        break;
                    case 6:
                        Console.WriteLine("Your social number");
                        string social = Console.ReadLine();
                        List<string> hotelList = new List<string>();
                        foreach (Book book in DataMgr.Instance.ListBook)
                        {
                            if (!hotelList.Contains(book.HotelCode))
                            {
                                hotelList.Add(book.HotelCode);
                            }
                        }
                        foreach (string hotel in hotelList)
                        {
                            Console.WriteLine(hotel);
                        }
                        break;
                    case 7:
                        Console.WriteLine("Bye bye ...");
                        break;
                    default:
                        Console.WriteLine("Invalid input");
                        break;
                }
            }
            while (choice != 7);
        }
    }
}

using System;

namespace Qlks
{
    public class Customer
    {
        public Customer(string socialNumber, string name, int age, string gender, string homeTown)
        {
            SocialNumber = socialNumber;
            Name = name;
            Age = age;
            Gender = gender;
            HomeTown = homeTown;
        }

        public Customer()
        {
        }

        public string SocialNumber { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
        public string Gender { get; set; }
        public string HomeTown { get; set; }

        public void Input()
        {
            Console.WriteLine("Please input social number");
            this.SocialNumber = Console.ReadLine();
            Console.WriteLine("Please input name");
            this.Name = Console.ReadLine();
            Console.WriteLine("Please input age");
            this.Age = int.Parse(Console.ReadLine());
            Console.WriteLine("Please input gender");
            this.Gender = Console.ReadLine();
            Console.WriteLine("Please input home town");
            this.HomeTown = Console.ReadLine();
        }

        public void Output()
        {
            Console.WriteLine("Social number is : {0}",SocialNumber);
            Console.WriteLine("Name is : {0}", Name);
            Console.WriteLine("Gender is : {0}", Gender);
            Console.WriteLine("Age is : {0}", Age);
            Console.WriteLine("Home town is : {0}", HomeTown);
        }
    }
}

using System;
using System.Collections.Generic;
namespace Qlks
{
    public enum Category
    {
        VIP,
        BinhDan
    }
    public class Hotel
    {
        //tên, địa chỉ, loại khách sạn(VIP, Bình dân,...),
        public string Name { get; set; }
        public string Address { get; set; }
        public Category HotelType { get; set; }
        public List<Room> RoomList { get; set; }
        public string Code;

        public Hotel(string name, string address, Category hotelType, string code)
        {
            Name = name;
            Address = address;
            HotelType = hotelType;
            this.RoomList = new List<Room>();
            Code = code;
        }

        public Hotel()
        {
            RoomList = new List<Room>();
        }

        public void Input()
        {
            Console.WriteLine("Input name");
            Name = Console.ReadLine();
            Console.WriteLine("Input address");
            Address = Console.ReadLine();
            Console.WriteLine("Hotel type: \n 1.VIP \n2.Binh dan.\n Your choice : ...");
            switch (int.Parse(Console.ReadLine()))
            {
                case 1:
                    HotelType = Category.VIP;
                    break;
                default:
                    HotelType = Category.BinhDan;
                    break;
            }
            while (true)
            {
                Room nRoom = new Room();
                nRoom.Input();
                RoomList.Add(nRoom);
                Console.WriteLine("Continue ? (y/n)");
                if (Console.ReadLine().Equals("n"))
                {
                    break;
                }
            }
            Console.WriteLine("Input hotel code");
            Code = Console.ReadLine();
        }

        public void Output()
        {
            Console.WriteLine("Name : {0}",Name);
            Console.WriteLine("Address : {0}",Address);
            Console.WriteLine("Hotel type : {0}",HotelType);
            Console.WriteLine("Room list : ");
            foreach (Room room in RoomList)
            {
                room.Output();
            }
            Console.WriteLine("Hotel code: {0}",Code);
            Console.WriteLine("--------------");
        }
    }
}

using System;
using System.Collections.Generic;
namespace Qlks
{
    public class DataMgr
    {
        private static DataMgr instance = null;
        private static List<Hotel> _listHotel; 
        public List<Hotel> ListHotel {
            get {
                if (_listHotel == null)
                {
                    _listHotel = new List<Hotel>();
                }
                return _listHotel;
            }
            private set{}
        }
        
        private static List<Customer> _listCustomer;
        public List<Customer> ListCustomer {
            get {
                if (_listCustomer == null)
                {
                    _listCustomer = new List<Customer>();
                }
                return _listCustomer;
            }
            private set{}
        }

        private static List<Book> _listBook;
        public List<Book> ListBook {
            get {
                if (_listBook == null)
                {
                    _listBook = new List<Book>();
                }
                return _listBook;
            }
            private set{}
        }
        private DataMgr(){}

        public static DataMgr Instance
        {
            get
            {
                if (instance == null)
                {
                    instance = new DataMgr();
                }
                return instance;
            }
            private set{}
        }
    }
}

using System;
using System.Collections.Generic;

namespace Qlks
{
    public class Book
    {
        // ngày book, ngày trả phòng, Số CMTND người book, mã khách sạn, mã phòng
        public string BookDate { get; set; }
        public string ReturnDate { get; set; }
        public string SocialNumber { get; set; }
        public string HotelCode { get; set; }
        public string RoomCode { get; set; }

        public Book() { }

        public void input()
        {
            Console.WriteLine("Input book date");
            string bookDate = Console.ReadLine();
            Console.WriteLine("Input return date");
            string returnDate = Console.ReadLine();
            Console.WriteLine("Input social number");
            string social = Console.ReadLine();
            Console.WriteLine("Input hotel code");
            string hotelCode = Console.ReadLine();
            Console.WriteLine("Input room code");
            string roomCode = Console.ReadLine();
            //check social number
            int i;
            for (i = 0; i < DataMgr.Instance.ListCustomer.Count; i++)
            {
                if (DataMgr.Instance.ListCustomer[i].SocialNumber.Equals(social)) break;
            }
            if (i == DataMgr.Instance.ListCustomer.Count)
            {
                Console.WriteLine("Customer not found ... Input the new customer ?");
                if (Console.ReadLine().Equals("y"))
                {
                    //input new customer
                    Customer cst = new Customer();
                    cst.Input();
                    DataMgr.Instance.ListCustomer.Add(cst);
                    social = cst.SocialNumber;
                }
                else
                {
                    return;
                }
            }
            for (i = 0; i < DataMgr.Instance.ListHotel.Count; i++)
            {
                if (DataMgr.Instance.ListHotel[i].Code.Equals(hotelCode)) break;
            }
            if (i == DataMgr.Instance.ListHotel.Count)
            {
                Console.WriteLine("Hotel not found...");
                return;
            }
            Hotel hotel = DataMgr.Instance.ListHotel[i];
            for (i = 0; i < hotel.RoomList.Count; i++)
            {
                if (hotel.RoomList[i].Code.Equals(roomCode)) break;
            }
            if (i == hotel.RoomList.Count)
            {
                Console.WriteLine("Room not found");
                return;
            }
            BookDate = bookDate;
            ReturnDate = returnDate;
            SocialNumber = social;
            HotelCode = hotelCode;
            RoomCode = roomCode;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Qlks
{
    public class Room
    {
        

        public Room()
        {

        }

        public Room(string name, float price, int floor, int maxSlot, string code)
        {
            Name = name;
            Price = price;
            Floor = floor;
            MaxSlot = maxSlot;
            Code = code;
        }

        //Tên phòng, giá tiền, tầng, số người tối đa ở, mã phòng

        public string Name { get; set; }
        public float Price { get; set; }
        public int Floor { get; set; }
        public int MaxSlot { get; set; }
        public string Code { get; set; }

        public void Input()
        {
            Console.WriteLine("Please input name");
            this.Name= Console.ReadLine();
            Console.WriteLine("Please input price");
            this.Price= float.Parse(Console.ReadLine());
            Console.WriteLine("Please input floor");
            this.Floor= int.Parse(Console.ReadLine());
            Console.WriteLine("Please input max slot");
            this.MaxSlot = int.Parse(Console.ReadLine());
            Console.WriteLine("Please input code");
            this.Code = Console.ReadLine();
        }

        public void Output()
        {
            Console.WriteLine("Name is : {0}", Name);
            Console.WriteLine("Price is : {0}", Price);
            Console.WriteLine("Floor is : {0}", Floor);
            Console.WriteLine("Max slot is : {0}", MaxSlot);
            Console.WriteLine("Code is : {0}", Code);
        }
    }
}

2020-06-29 14:12:12

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace newBT
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Hotel> listHotel = new List<Hotel>();
            List<Customer> listCustomer = new List<Customer>();
            List<Book> listBook = new List<Book>();
            while (true)
            {
                showMenu();
                int choose = int.Parse(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        Hotel hotel = new Hotel();
                        hotel.input();
                        listHotel.Add(hotel);
                        break;
                    case 2:
                        Console.WriteLine("Insert hotelCode: ");
                        string hotelCode = Console.ReadLine();
                        foreach (Hotel hot in listHotel)
                        {
                            if (hotelCode.Equals(hot.hotelcode))
                            {
                                hot.output();
                            }
                        }
                        break;
                    case 3:
                        Book book = new Book();
                        book.input();
                        listBook.Add(book);
                        break;
                    case 4:
                        break;
                    case 5:
                        int total = 0;
                        Console.WriteLine("Insert hotelCode: ");
                        string searchHotel = Console.ReadLine();
                        foreach (Hotel hote in listHotel)
                        {
                            if (searchHotel.Equals(hote.hotelcode))
                            {
                                foreach (room Room in hote.ListRoom)
                                {
                                    total = total + Room.price;
                                }
                            }
                        }
                        Console.WriteLine("Total Money: "+ total);
                        break;
                    case 6:
                        Console.WriteLine("Insert CMND: ");
                        string searchCMND = Console.ReadLine();
                        foreach (Book bok in listBook)
                        {
                            if (searchCMND.Equals(bok.CMND))
                            {
                                foreach(Hotel hote in listHotel)
                                {
                                }
                            }
                        }
                        break;
                    case 7:
                        Environment.Exit(0);
                        break;
                }
            }
        }

        static void showMenu()
        {
            Console.WriteLine("1. Insert A Hotel");
            Console.WriteLine("2. Display A Hotel");
            Console.WriteLine("3. Book A Room");
            Console.WriteLine("4. Find Booked Room by Date");
            Console.WriteLine("5. Display Total Money");
            Console.WriteLine("6. Display all Hotel from CMND");
            Console.WriteLine("7. Exit");
            Console.WriteLine("Choose: ");
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace newBT
{
    class Customer
    {
        public string CMND { get; set; }
        public string name { get; set; }
        public int age { get; set; }
        public string gender { get; set; }
        public string country { get; set; }



        public Customer()
        {

        }

        public Customer(string CMND, string name, int age, string gender, string country)
        {
            this.CMND = CMND;
            this.name = name;
            this.age = age;
            this.gender = gender;
            this.country = country;
        }

        public void input()
        {
            Console.WriteLine("Insert CMND: ");
            CMND = Console.ReadLine();
            Console.WriteLine("Insert name: ");
            name = Console.ReadLine();
            Console.WriteLine("Insert age: ");
            age = int.Parse(Console.ReadLine());
            Console.WriteLine("Insert gender: ");
            gender = Console.ReadLine();
            Console.WriteLine("Insert country: ");
            country = Console.ReadLine();
        }
        
        public void output()
        {
            Console.WriteLine("CMND: " + CMND + "; " + "name: " + name + "; " + "age: " + age + "; " + "gender: " + gender + "; " + "country: " + country);
        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace newBT
{
    class Hotel
    {
        public string name { get; set; }
        public string address { get; set; }
        public string type { get; set; }
        public string hotelcode { get; set; }

        public List<room> ListRoom { get; set; }

        public Hotel()
        {
            ListRoom = new List<room>();
        }

        public Hotel(string name, string address, string type, string hotelcode, List<room> listRoom)
        {
            this.name = name;
            this.address = address;
            this.type = type;
            this.hotelcode = hotelcode;
            this.ListRoom = listRoom;
        }

        public void input()
        {
            Console.WriteLine("Insert name: ");
            name = Console.ReadLine();
            Console.WriteLine("Insert address: ");
            address = Console.ReadLine();
            Console.WriteLine("Insert type: ");
            type = Console.ReadLine();
            Console.WriteLine("Insert hotelcode: ");
            hotelcode = Console.ReadLine();
            Console.WriteLine("Insert number of room: ");
            int numb = int.Parse(Console.ReadLine());
            for (int i = 0; i < numb; i++)
            {
                room Room = new room();
                Room.input();
                listRoom.Add(Room);
            }
        }

        public void output()
        {
            Console.WriteLine("name: " + name + "; " + "address: " + address + "; " + "type: " + type + "; " + "hotelcode: " + hotelcode);
            foreach(room a in listRoom){
                a.output();
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace newBT
{
    class room
    {
        public string name { get; set; }
        public int price { get; set; }
        public int floor { get; set; }
        public int maximum { get; set; }
        public string roomcode { get; set; }

        public room()
        {

        }

        public room(string name, int price, int floor, int maximum, string roomcode)
        {
            this.name = name;
            this.price = price;
            this.floor = floor;
            this.maximum = maximum;
            this.roomcode = roomcode;
        }

        public void input()
        {
            Console.WriteLine("Insert name: ");
            name = Console.ReadLine();
            Console.WriteLine("Insert price: ");
            price = int.Parse(Console.ReadLine());
            Console.WriteLine("Insert floor: ");
            price = int.Parse(Console.ReadLine());
            Console.WriteLine("Insert maximum: ");
            maximum = int.Parse(Console.ReadLine());
            Console.WriteLine("Insert roomcode: ");
            roomcode = Console.ReadLine();
        }

        public void output()
        {
            Console.WriteLine("name: " + name + "; " + "price: " + price + "; " + "floor: " + floor + "; " + "maximum: " + maximum + "; " + "roomcode: " + roomcode);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace newBT
{
    class Book
    {
        public string bookDate { get; set; }
        public string bookReturn { get; set; }
        public string CMND { get; set; }
        public string hotelCode { get; set; }
        public string roomCode { get; set; }

        public Book()
        {

        }

        public Book(string bookDate, string bookReturn, string cMND, string hotelCode, string roomCode)
        {
            this.bookDate = bookDate;
            this.bookReturn = bookReturn;
            this.CMND = cMND;
            this.hotelCode = hotelCode;
            this.roomCode = roomCode;
        }

        public void input()
        {
            Console.WriteLine("Insert bookDate: ");
            bookDate = Console.ReadLine();
            Console.WriteLine("Insert bookReturn: ");
            bookReturn = Console.ReadLine();
        }

        public void output()
        {
            Console.WriteLine("bookDate: " + bookDate + "; " + "bookReturn: " + bookReturn + "; " + "CMND: " + CMND + "; " + "hotelCode: " + hotelCode + "; " + "roomCode: " + roomCode);
        }
    }
}

2020-05-25 18:20:05

using System;
using System.Collections.Generic;
using System.Text;

namespace Hotel
{
    class Customer
    {
        public string cmnd { get; set; }
        public string name { get; set; }
        public string gender { get; set; }
        public string address { get; set; }
        public int age { get; set; }
        public Customer()
        {

        }
        public Customer(string cmnd , string name, int age, string gender,string address )
        {
            this.address = address;
            this.age = age;
            this.cmnd = cmnd;
            this.gender = gender;
            this.name = name;
        }
        public void input()
        {
            Console.WriteLine("CMND : ");
            cmnd = Console.ReadLine();
            input(cmnd);
        }
        public void input(string cmnd)
        {
            this.cmnd = cmnd;
            Console.WriteLine("Name : ");
            name = Console.ReadLine();
            Console.WriteLine("Age : ");
            age = int.Parse(Console.ReadLine());
            Console.WriteLine("Gender : ");
            gender = Console.ReadLine();
            Console.WriteLine("Address : ");
            address = Console.ReadLine();
        }

        public void display()
        {
            Console.WriteLine("CMND : {0} , Fullname : {1} , Age : {2} , Gender : {3} , Address : {4}",cmnd,name,age,gender,address);
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace Hotel
{
    class Hotel
    {

        public string name { get; set; }
        public string address { get; set; }
        public string Rank { get; set; }

        public List<Room> rooms { get; set; }

        public string hotelID { get; set; }
        public Hotel()
        {
            rooms = new List<Room>();
        }
        public void input()
        {
            
            Console.WriteLine("Code of hotel : ");
            hotelID = Console.ReadLine();
            input(hotelID);
        }
        public void input(string hotelID)
        {
            Console.WriteLine("Name of hotel : ");
            name = Console.ReadLine();
            Console.WriteLine("Address of hotel : ");
            address = Console.ReadLine();
            rankHotel();
            

            inputRoom(rooms);
            this.hotelID = hotelID;

        }
        public void display()
        {
            Console.WriteLine("hotelName : {0} , Address : {1} , Level : {2} , hotelID : {3} ", name, address, Rank, hotelID);
            Console.WriteLine("List of Room  : ");
            foreach (var item in rooms)
            {
                item.display();
            }
            Console.WriteLine("------------------------------------------------------------");

        }

        private void inputRoom(List<Room> rooms)
        {
            Console.WriteLine("Seting Room's Information : ");
            for (; ; )
            {
                Room room = new Room();
                room.input();
                rooms.Add(room);
                Console.WriteLine("add room : (y/n)");
                string option = Console.ReadLine();
                if (option.Equals("n"))
                {
                    break;
                }
            }
        }

        private void rankHotel()
        {
            bool dk = true;
            while (dk)
            {
                Console.WriteLine("1.VIP");
                Console.WriteLine("2.Normal");
                Console.WriteLine("Choose : ");
                int choose = int.Parse(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        Rank = "VIP";
                        dk = false;
                        break;
                    case 2:
                        Rank = "Normal";
                        dk = false;
                        break;
                    default:
                        Console.WriteLine("Error !! ");

                        break;

                }
            }
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace Hotel
{
    class Room
    {
        public string roomName { get; set; }
        public int floorNumber { get; set; }
        public int maxPerson { get; set; }
        public int price { get; set; }
        public string roomCode { get; set; }

        public Room()
        {

        }
        public Room(string roomName , int floorNumber ,int maxPerson , int price ,string roomCode)
        {
            this.floorNumber = floorNumber;
            this.maxPerson = maxPerson;
            this.price = price;
            this.roomCode = roomCode;
            this.roomName = roomName;
        }
        public void input()
        {
            Console.WriteLine("ten phong : ");
            roomName = Console.ReadLine();
            Console.WriteLine("tang  : ");
            floorNumber = int.Parse(Console.ReadLine());
            Console.WriteLine("so nguoi toi da : ");
            maxPerson = int.Parse(Console.ReadLine());
            Console.WriteLine("gia phong 1 ngay : ");
            price = int.Parse(Console.ReadLine());
            Console.WriteLine("ma phong : ");
            roomCode = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("roomName : {0} , numberFloor : {1} , maxPerson : {2} , Price : {3} , roomCode : {4}",roomName,floorNumber,maxPerson,price,roomCode);
            
        }
    }
}

using System;
using System.Collections.Generic;
using System.Text;

namespace Hotel
{
    class Book
    {
        public DateTime checkin { get; set; }
        public DateTime checkout { get; set; }
        public string cmnd { get; set; } 

        public string hotelID { get; set; }

        public string roomCode { get; set; }


        public Book()
        {
            
        }
        public void display()
        {
            Console.WriteLine("CheckIn : {0} , CheckOut : {1} , Cmnd : {2} , HotelID : {3} , roomID : {4}",checkin,checkout,cmnd,roomCode);
        }
        public void input(List<Hotel> hotels,List<Customer> customers)
        {
            Console.WriteLine("Ngay book (dd/mm/YYYY): ");
            string strDatetime = Console.ReadLine();
            checkin = DateTime.ParseExact(strDatetime,"dd/MM/yyyy",null);
            Console.WriteLine("Ngay tra phong (dd/mm/YYYY): ");
            strDatetime = Console.ReadLine();
            checkout = DateTime.ParseExact(strDatetime,"dd/MM/yyyy",null);
            inputCMND(customers);
            inputHotelID(hotels);
        }
        private void inputCMND(List<Customer> customers)
        {
            bool dk = false;
            Console.WriteLine("Enter CMND : ");
            string find = Console.ReadLine();
            foreach (var item in customers)
            {
                if (find.Equals(item.cmnd))
                {
                    cmnd = find;
                    dk = true;
                    break;
                }
            }
            if (!dk)
            {
                Console.WriteLine("nhập thông tin Customer");
                Customer customer = new Customer();
                customer.input(find);
                customers.Add(customer);
                cmnd = customer.cmnd;
            }

        }
        private void inputHotelID(List<Hotel> hotels)
        {
            bool dk = false;
            Console.WriteLine("Enter hotelID : ");
            string find = Console.ReadLine();
            foreach (var item in hotels)
            {
                if (find.Equals(item.hotelID))
                {
                    hotelID = find;
                    dk = true;
                    break;
                }
            }
            if (!dk)
            {
                Console.WriteLine("nhập thông tin hotel : ");
                Hotel hotel = new Hotel();
                hotel.input();
                hotelID = hotel.hotelID;
                hotels.Add(hotel);
            }
            foreach (var item in hotels)
            {
                if (hotelID.Equals(item.hotelID))
                {
                    findRoom(item);
                }
            }


        }

        private void findRoom(Hotel hotel)
        {
            bool dk = true;
            while (dk)
            {
                foreach (Room item in hotel.rooms)
                {
                    item.display();
                }
                Console.WriteLine("Enter roomCode to book : ");
                string check;
                check = Console.ReadLine();
                foreach (Room item in hotel.rooms)
                {
                    if (check.Equals(item.roomCode))
                    {
                        roomCode = check;
                        dk = false;
                        break;
                    }
                }
                if (dk)
                {
                    Console.WriteLine("ma phong sai !!");
                }
            }
        }
        

    }

}

using System;
using System.Collections.Generic;
using System.Text;

namespace Hotel
{
    class FunctionMenu
    {
        public FunctionMenu()
        {

        }
        public void findCustomer(List<Customer> customers)
        {
            Console.WriteLine("Enter CMND of Customer to find : ");
            string find = Console.ReadLine();
            bool isFind = false;
            foreach (Customer customer in customers)
            {
                if (find.Equals(customer.cmnd))
                {
                    customer.display();
                    isFind = true;
                    break;
                }
            }
            if (!isFind)
            {
                Console.WriteLine("Not found Customer !!!");
            }

        }
        public void totalIncome(List<Book> books, List<Hotel> hotels)
        {
            

            foreach (var hotel in hotels)
            {
                int income = 0;
                foreach (Room room in hotel.rooms)
                {
                    foreach (Book book in books)
                    {
                        if (room.roomCode.Equals(book.roomCode))
                        {
                            TimeSpan Time = book.checkout - book.checkin;
                            int TongSoNgay = Time.Days;
                            income += (room.price*TongSoNgay);
                            break;
                        }
                    }

                }
                Console.WriteLine("Thu nhap cua KS: {0} la : ${1} .",hotel.name,income);
            }

        }

        public void inputHotel(List<Hotel> hotels)
        {
            for (; ; )
            {
                Hotel hotel = new Hotel();
                hotel.input();
                hotels.Add(hotel);
                Console.WriteLine("add new hotel : ( y/ n )");
                string option = Console.ReadLine();
                if (option.Equals("n"))
                {
                    break;
                }
            }
        }
        public void displayHotel(List<Hotel> hotels)
        {
            foreach (var item in hotels)
            {
                item.display();
            }

        }
        public void booking(List<Book> books, List<Hotel> hotels, List<Customer> customers)
        {
            Book book = new Book();
            book.input(hotels,customers);
            books.Add(book);
        }
        public void findRoomByDate(List<Book> books, List<Hotel> hotels)
        {
            if (hotels.Count == 0)
            {
                Console.WriteLine("khong co data!!!");
                return;
            }

            Hotel currentHotel = null;
            for (; ; )
            {
                foreach (Hotel hotel in hotels)
                {
                    Console.WriteLine("Ma KS: {0}, Ten KS: {1}", hotel.hotelID, hotel.name);
                }
                Console.WriteLine("Enter hotelID : ");
                string hotelID = Console.ReadLine();
                foreach (Hotel hotel in hotels)
                {
                    if (hotel.hotelID.Equals(hotelID))
                    {
                        currentHotel = hotel;
                        break;
                    }
                }
                if (currentHotel != null)
                {
                    break;
                }
                Console.WriteLine("(Not Found) Nhap lai: ");
            }
            if (currentHotel.rooms.Count == 0)
            {
                Console.WriteLine("khong co data!!!");
                return;
            }

            Console.WriteLine("Ngay CheckIn (dd/mm/YYYY): ");
            string dateTime = Console.ReadLine();
            DateTime CheckIn = DateTime.ParseExact(dateTime, "dd/MM/yyyy", null);

            Console.WriteLine("Ngay CheckOut (dd/mm/YYYY): ");
            dateTime = Console.ReadLine();
            DateTime CheckOut = DateTime.ParseExact(dateTime, "dd/MM/yyyy", null);

            
            foreach (var room in currentHotel.rooms)
            {
                List<Book> currentBooking = new List<Book>();
                
                foreach (var book in books)
                {

                    if (book.hotelID.Equals(currentHotel.hotelID)&&book.roomCode.Equals(room.roomCode))
                    {
                        currentBooking.Add(book);
                    }
                   

                }
                bool isFind = false;
                foreach (var book in currentBooking)
                {
                    if (DateTime.Compare(book.checkin, CheckOut) > 0 || DateTime.Compare(book.checkout, CheckIn) < 0)
                    {
                        //room dat yeu cau
                    }
                    else
                    {
                        isFind = true;
                        break;
                    }

                }
                if (!isFind)
                {
                    Console.WriteLine("Room No: {0}, Room Name: {1}", room.roomCode, room.roomName);
                }

            }
           
        }





    }
}

using System;
using System.Collections.Generic;
using System.Text;
namespace Hotel
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.OutputEncoding = Encoding.UTF8; 
            FunctionMenu functionMenu = new FunctionMenu();
            List<Book> books = new List<Book>();
            List<Room> rooms = new List<Room>();
            List<Hotel> hotels = new List<Hotel>();
            List<Customer> customers = new List<Customer>();
            Console.WriteLine("Hello World!");
            int c;
            do
            {
                menu();
                c = int.Parse(Console.ReadLine());
                switch (c)
                {
                    case 1:
                        functionMenu.inputHotel(hotels);
                        break;
                    case 2:
                        functionMenu.displayHotel(hotels);
                        break;
                    case 3:
                        functionMenu.booking(books,hotels,customers);
                        break;
                    case 4:
                        functionMenu.findRoomByDate(books,hotels);
                        break;
                    case 5:
                        functionMenu.totalIncome(books,hotels);
                        break;
                    case 6:
                        functionMenu.findCustomer(customers);
                        break;
                    case 7:
                        Console.WriteLine("Thoat !!");
                        break;
                    default:
                        Console.WriteLine("Nhap sai !!");
                        break;


                }

            } while (c!=7);

        }
        static void menu()
        {
            Console.WriteLine("  1. Nhập thông tin khách sạn    ");
            Console.WriteLine("  2. Hiển thị thông tin khách sạn   ");
            Console.WriteLine("  3. Đặt phong nghỉ   ");
            Console.WriteLine("  4. Tìm phòng còn trống   ");
            Console.WriteLine("  5. Thống kê doanh duy khách sạn   ");
            Console.WriteLine("  6. Tìm kiếm thông tin khách hàng.   ");
            Console.WriteLine("  7. Thoát chương trình   ");
            Console.WriteLine(" chon :   ");
        }
    }
}