2021-10-12 10:25:38

#Book.cs

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

namespace QuanLyKhachSan
{
    class Book
    {
        public DateTime BookDate { get; set; }
        public DateTime ReturnDate { get; set; }

        public string CMTND { get; set; }
        public string HotelId { get; set; }
        public string RoomId { get; set; }

        public Book() { }

        public Book(DateTime bookDate, DateTime returnDate, string cMTND, string hotelId, string roomId)
        {
            BookDate = bookDate;
            ReturnDate = returnDate;
            CMTND = cMTND;
            HotelId = hotelId;
            RoomId = roomId;
        }

        public void Input(List<KhachHang> customers, List<Hotel> hotels)
        {
            Console.WriteLine("Nhap so CMTND:");
            string cmtnd = Console.ReadLine();

            int check = 0;
            foreach(KhachHang khach in customers)
            {
                if(khach.CMTND == cmtnd)
                {
                    check++;
                    break;
                } 
            }
            if(check == 0)
            {
                Console.WriteLine("Khach hang khong ton tai, moi nhap thong tin khach hang");
                KhachHang khach = new KhachHang();
                khach.CMTND = cmtnd;
                khach.Input();
                customers.Add(khach);
            }
            DisplayHotel(hotels);
            Hotel hotel = null;
            while(true)
            {
                Console.WriteLine("Nhap ma khach san ban chon:");
                string id = Console.ReadLine();
                int check1 = 0;
                foreach(Hotel hotel1 in hotels)
                {
                    if(id == hotel1.HotelID)
                    {
                        check1++;
                        HotelId = id;
                        hotel = hotel1;
                        break;
                    }
                }
                if(check1 == 0)
                {
                    Console.WriteLine("Ma khach san khong ton tai");
                } else
                {
                    break; 
                }
            }
            DisplayRoom(hotel);
            while (true)
            {
                Console.WriteLine("Nhap ma phong ban chon:");
                string roomId = Console.ReadLine();
                string hotelId = HotelId;
                int check2 = 0;
                foreach (Hotel hotel1 in hotels)
                {
                    if (hotel1.HotelID == hotelId)
                    {
                        foreach (Room room in hotel1.RoomList)
                        {
                            if (room.RoomId == roomId)
                            {
                                check2++;
                                RoomId = roomId;
                                break;
                            }
                        }
                        break;
                    }
                }
                if(check2 == 0)
                {
                    Console.WriteLine("Ma phong khong ton tai");

                } else
                {
                    break;
                }
            }
            Console.WriteLine("Nhap ngay dat phong:");
            BookDate = Convert.ToDateTime(Console.ReadLine());
            Console.WriteLine("Nhap ngay tra phong:");
            ReturnDate = Convert.ToDateTime(Console.ReadLine());
        }

        public void DisplayHotel(List<Hotel> hotels)
        {
            foreach(Hotel hotel in hotels)
            {
                hotel.Display();
            }
        }

        public void DisplayRoom(Hotel hotel)
        {
            foreach(Room room in hotel.RoomList)
            {
                room.Display();
            }
        }
    }
}

#Hotel.cs

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

namespace QuanLyKhachSan
{
    class Hotel
    {
        public string Name { get; set; }
        public string Type { get; set; }
        public string Address { get; set; }
        public List<Room> RoomList { get; set; }
        public string HotelID { get; set; }

       

        public Hotel(string name, string type, string address, List<Room> roomList, string hotelId)
        {
            Name = name;
            Type = type;
            Address = address;
            RoomList = roomList;
            HotelID = hotelId;
        }

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

        public void Input()
        {
            Console.WriteLine("Nhap ma khach san:");
            HotelID = Console.ReadLine();
            Console.WriteLine("Nhap ten khach san:");
            Name = Console.ReadLine();
            Console.WriteLine("Nhap loai khach san:");
            Type = Console.ReadLine();
            Console.WriteLine("Nhap dia chi khach san:");
            Address = Console.ReadLine();
        }

        public void Display()
        {
            Console.WriteLine("Hotel ID: {0}, Hotel Name: {1}, Type: {2}, Address: {3}", HotelID, Name, Type, Address);
            Console.WriteLine("Room list:");
            foreach(Room room in RoomList)
            {
                room.Display();
            }
        }
    }
}

#KhachHang.cs

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

namespace QuanLyKhachSan
{
    class KhachHang
    {
        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 KhachHang(string cMTND, string fullName, int age, string gender, string address)
        {
            CMTND = cMTND;
            FullName = fullName;
            Age = age;
            Gender = gender;
            Address = address;
        }
        public KhachHang() { }

        public void InputCMTND()
        {
            Console.WriteLine("Nhap CMTND:");
            CMTND = Console.ReadLine();
        }
         public void Input()
         {
            
            Console.WriteLine("Nhap ho va ten:");
            FullName = Console.ReadLine();
            Console.WriteLine("Nhap tuoi:");
            Age = Utility.ReadInt();
            Console.WriteLine("Nhap gioi tinh:");
            Gender = Console.ReadLine();
            Console.WriteLine("Nhap dia chi:");
            Address = Console.ReadLine();
         }

        public void Display()
        {
            Console.WriteLine("CMTND: {0}, Full Name: {1}, Age: {2}, Gender: {3}, Address: {4}", CMTND, FullName, Age, Gender, Address);
        }
    }
}

#Program.cs

using System;
using System.Collections.Generic;

namespace QuanLyKhachSan
{
    class Program
    {
        static void Main(string[] args)
        {
            int choose;
            do
            {
                Menu();
                choose = Utility.ReadInt();

                switch (choose)
                {
                    case 1:
                        InputHotel();
                        break;
                    case 2:
                        DisplayHotel();
                        break;
                    case 3:
                        Booking();
                        break;
                    case 4:
                        FindRoom();
                        break;
                    case 5:
                        TongTien();
                        break;
                    case 6:
                        FindCustomers();
                        break;
                    case 7:
                        return;
                    default:
                        Console.WriteLine("Nhap sai!!");
                        break;

                }


            } while (choose >= 1 && choose <= 7);
        }

        static void Menu()
        {
            Console.WriteLine("1.Nhap thong tin khach san");
            Console.WriteLine("2.Hien thi thong tin khach san");
            Console.WriteLine("3.Dat phong nghi");
            Console.WriteLine("4.Tim phonng trong");
            Console.WriteLine("5.Thong ke doanh duy khach san");
            Console.WriteLine("6.Tim kiem thong tin khach hang");
            Console.WriteLine("7.Thoat chuong trinh");
            Console.WriteLine("Choose:");
        }

        public static List<KhachHang> customers = new List<KhachHang>();
        public static List<Hotel> hotels = new List<Hotel>();
        public static List<Book> books = new List<Book>();

        static void InputHotel()
        {
            Console.WriteLine("Nhap so khach san can nhap thong tin:");
            int n = Utility.ReadInt();

            for(int i =0; i< n; i++)
            {
                Hotel hotel = new Hotel();
                hotel.Input();
                Console.WriteLine("Nhap vao so phong co trong khach san:");
                int numberOfRoom = Utility.ReadInt();
                for(int j =0; j< numberOfRoom; j++)
                {
                    Room room = new Room();
                    room.Input();
                    hotel.RoomList.Add(room);
                }
                hotels.Add(hotel);
            }
        }
        static void DisplayHotel()
        {
            if(hotels.Count == 0)
            {
                Console.WriteLine("Khong co thong tin khach san nao!!");
                return;
            }

            foreach(Hotel hotel in hotels)
            {
                hotel.Display();
            }
        }

        static void Booking()
        {
            Console.WriteLine("Nhap so phong can dat");
            int n = Utility.ReadInt();

            for(int i = 0; i <n; i++)
            {
                Book book = new Book();
                book.Input(customers, hotels);
                books.Add(book);
            }
        }

        static void FindRoom()
        {
            Console.WriteLine("Nhap vao ngay dat phong:");
            DateTime bd = Convert.ToDateTime(Console.ReadLine());
            Console.WriteLine("Nhap ngay tra phong:");
            DateTime rd = Convert.ToDateTime(Console.ReadLine());

            foreach(Book book in books)
            {
                if(bd.Equals(book.BookDate) && rd.Equals(book.ReturnDate))
                {
                    foreach(Hotel hotel in hotels)
                    {
                        foreach(Room room in hotel.RoomList)
                        {
                            Console.WriteLine("Khach san: {0}", hotel.Name);
                            room.Display();
                        }
                    }
                }
                                
            }
        }

        static void TongTien()
        {
            foreach(Hotel hotel in hotels)
            {
                float sum = 0;
                foreach (Room room in hotel.RoomList)
                {
                    sum += room.Price;
                }
                Console.WriteLine("Tong tien thu duoc cua khach san {0}: {1}", hotel.Name, sum);
            }
        }

        static void FindCustomers()
        {
            Console.WriteLine("Nhap so CMTND khach hang can tim:");
            string str = Console.ReadLine();
            foreach(KhachHang khach in customers)
            {
                if(str == khach.CMTND)
                {
                    Console.WriteLine("{0} da o nhung khach san", khach.FullName);
                } else
                {
                    Console.WriteLine("Khong co du lieu khach hang");
                }
            }
            foreach(Book book in books)
            {
                    if(str == book.CMTND)
                    {
                        foreach(Hotel hotel in hotels)
                        {
                            if(hotel.HotelID == book.HotelId)
                            {
                                Console.WriteLine("{0}", hotel.Name);
                            }
                        }
                    }
            }
        }
    }
}

#Room.cs

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

namespace QuanLyKhachSan
{
    class Room
    {
        public string Name { get; set; }
        public float Price { get; set; }
        public int Tang { get; set; }
        public int MaxPeople { get; set; }
        public string RoomId { get; set; }

        public Room() { }
        public Room(string name, float price, int tang, int maxPeople, string roomId)
        {
            Name = name;
            Price = price;
            Tang = tang;
            MaxPeople = maxPeople;
            RoomId = roomId;
        }

        public void Input()
        {
            Console.WriteLine("Nhap ma phong:");
            RoomId = Console.ReadLine();
            Console.WriteLine("Nhap ten phong:");
            Name = Console.ReadLine();
            Console.WriteLine("Nhap tang:");
            Tang = Utility.ReadInt();
            Console.WriteLine("Nhap so nguoi o toi da:");
            MaxPeople = Utility.ReadInt();
            Console.WriteLine("Nhap gia phong:");
            Price = float.Parse(Console.ReadLine());

        }

        public void Display()
        {
            Console.WriteLine("Room ID: {0}, Room Name: {1}, Ground: {2}, People: {3}, Price: {4}", RoomId, Name, Tang, MaxPeople, Price);
        }
    }
}

#Utility.cs

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

namespace QuanLyKhachSan
{
    public class Utility
    {
        public static int ReadInt()
        {
            while(true)
            {
                try
                {
                    int value = int.Parse(Console.ReadLine());
                    return value;
                } catch (Exception ex)
                {
                    Console.WriteLine("Nhap sai");
                }
            }
        }
    }
}

2021-09-28 07:09:33

#Book.cs

using System;
using System.Collections.Generic;

public class Book
{
	public DateTime BookDate;
	public DateTime ReturnDate;
	private string cmtnd;
	public string CMTND { get { return this.cmtnd; } set {

			while (!IsNumber(value))
            {
				Console.WriteLine("Please enter only numbers");
				value = Console.ReadLine();
            }
			this.cmtnd = value;
			
		} }
	private string hotelCode;
	public string HotelCode
	{
		get { return this.hotelCode; }
		set
		{
			while (!IsNumber(value))
			{
				Console.WriteLine("Please enter only numbers");
				value = Console.ReadLine();
			}
			this.hotelCode = value;
		}
	}
	private string roomCode;
	public string RoomCode
	{
		get { return this.roomCode; }
		set
		{
			while (!IsNumber(value))
			{
				Console.WriteLine("Please enter only numbers");
				value = Console.ReadLine();
			}
			this.roomCode = value;
		}
	}
	public Book()
	{

	}

	public Book(DateTime BookDate, DateTime ReturnDate, string CMTND, string HotelCode, string RoomCode)
    {
		this.BookDate = BookDate;
		this.ReturnDate = ReturnDate;
		this.CMTND = CMTND;
		this.HotelCode = HotelCode;
		this.RoomCode = RoomCode;
    }

	public void input(List<Customer> customers, List<Hotel> hotels)
    {
		Console.WriteLine("Input CMTND of the Customer:");
		CMTND = Console.ReadLine();
        bool check = false;

		for (int i = 0; i < customers.Count; i++)
		{
			if (customers[i].CMTND.Equals(CMTND))
			{
				check = true;
				break;
			}
		}

		if (!check)
		{
			Console.WriteLine("Customer does not exist, please input new: ");
			Customer customer = new Customer();
			customer.CMTND = CMTND;
			customer.inputWithCMTND();
		}

		DisplayHotelMenu(hotels);
		Hotel hotel = null;
		while (true)
		{
			HotelCode = Console.ReadLine();
			check = false;
			for (int i = 0; i < hotels.Count; i++)
			{
				if (hotels[i].Id.Equals(HotelCode))
				{
					check = true;
					hotel = hotels[i];
					break;
				}
			}
			if (!check)
			{
				break;
			}
			else
			{
				Console.WriteLine("Input hotel code again!");
            }

        }

        DisplayRoomMenu(hotel);
		while (true)
		{
			RoomCode = Console.ReadLine();
			check = false;

			for (int i = 0; i < hotel.RoomList.Count; i++)
			{
				if (hotel.RoomList[i].RoomCode.Equals(RoomCode))
				{
					check = true;
					break;
				}
			}
			if (!check)
			{
				break;
			}
			else
			{
				Console.WriteLine("Nhap Lai Ma Phong Khach San!");
			}
		}
		Console.WriteLine("Input book date:");
		BookDate = Convert.ToDateTime(Console.ReadLine());
		Console.WriteLine("Input return date:");
		ReturnDate = Convert.ToDateTime(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].Id);

		}
		Console.WriteLine("Input the hotel code that need to be choosed: ");
	}
	public void DisplayRoomMenu(Hotel hotel)
	{
		for (int i = 0; i < hotel.RoomList.Count; i++)
		{
			Console.WriteLine("{0}. - {1} - {2}", i + 1, hotel.RoomList[i].RoomName, hotel.RoomList[i].RoomCode);

		}
		Console.WriteLine("Input the room code:");
	}

	static bool IsNumber(string value)
	{
		if (string.IsNullOrEmpty(value))
		{
			return false;
		}
		char[] c = value.ToCharArray();
		for (int i = 0; i < c.Length; i++)
		{
			if (!char.IsDigit(c[i]))
			{
				return false;
			}
		}

		return true;
	}
}

#Customer.cs

using System;
using System.Text.RegularExpressions;

public class Customer
{
	private string cmtnd;
	public string CMTND { get { return this.cmtnd; } set {
			string pat = @"[0-9]";
			var reg = new Regex(pat, RegexOptions.IgnoreCase);
			var match = reg.Match(value);

			while (match != null && !match.Success)
			{
				Console.WriteLine("CMTND need only number inputs");
				value = Console.ReadLine();
				return;
			}
			this.cmtnd = value;
		} }
	public string Name { get; set; }
	public DateTime Birthday { get; set; }
	private string gender;
	public string Gender { get { return this.gender; } set
		{
			string pat = @"(\w+)\s+(male)|(female)|(Male)|(Female)";
			var reg = new Regex(pat, RegexOptions.IgnoreCase);
			var match = reg.Match(value);

			while (match != null && !match.Success)
			{
				Console.WriteLine("Gender need only 'Male' or 'Female' inputs");
				value = Console.ReadLine();
				return;
			}
			this.gender = value;
		}
	}
	public string Address { get; set; }
	public Customer()
	{

	}

	public Customer(string CMTND, string Name, DateTime BirthDay, string Gender, string Address)
    {
		this.CMTND = CMTND;
		this.Name = Name;
		this.Birthday = BirthDay;
		this.Gender = Gender;
		this.Address = Address;
    }

	public string ToStringForDateTime(DateTime datetime)
	{
		string date_str = datetime.ToString("dd/MM/yyyy HH:mm:ss");
		return date_str;
	}

	public DateTime DateTimeString(string dateStr)
	{
		DateTime Date = Convert.ToDateTime(dateStr);

		return Date;
	}

	public void input()
    {
		Console.WriteLine("Input CMTND:");
		CMTND = Console.ReadLine();
		inputWithCMTND();
	}

	public void inputWithCMTND()
    {
		Console.WriteLine("Name:");
		Name = Console.ReadLine();

		Console.WriteLine("Birthday:");
		string str = Console.ReadLine();
		Birthday = DateTimeString(str);

		Console.WriteLine("Gender:");
		Gender = Console.ReadLine();

		Console.WriteLine("Address:");
		Address = Console.ReadLine();
	}

	public void display()
    {
		Console.WriteLine("Name: {0}\nCMTND: {1}\nAge: {2}\nGender:{3}\nAddress:{4}", Name, CMTND, 
			Birthday.Year - DateTime.Now.Year, Gender, Address);
    }
}

#Hotel.cs

using System;
using System.Collections.Generic;

public class Hotel
{
	public List<Room> RoomList { get; set; }
	public string Id { get; set; }
	public string Name { get; set; }

	public string Type { get; set; }

	public string Address { get; set; }
	public Hotel()
	{
		RoomList = new List<Room>();
	}

	public Hotel(List<Room> RoomList, string Id, string Name, string Type, string Address)
    {
		this.RoomList = RoomList;
		this.Id = Id;
		this.Name = Name;
		this.Type = Type;
		this.Address = Address;
    }

	public void input()
    {
		Console.WriteLine("Code of the Hotel:");
		Id = Console.ReadLine();
		Console.WriteLine("Name:");
		Name = Console.ReadLine();
		Console.WriteLine("Address:");
		Address = Console.ReadLine();
		Console.WriteLine("Hotel Type:");
		Type = Console.ReadLine();
		
	}

	public void display()
    {
		Console.WriteLine("Name: {0}, Address: {1}, Hotel Type: {2}, Hotel Code: {3}", Name, Address, Type, Id);
		Console.WriteLine("Room List:");
		foreach (Room room in RoomList)
        {
			room.display();
        }
    }

}

#Room.cs

using System;

public class Room
{
	private string roomName;
	public string RoomName { get { return roomName; } set { this.roomName = value; } }
	private float price;
	public float Price { get { return price; } set { this.price = value; } }
	private int floor;
	public int Floor { get { return floor; } set { this.floor = value; } }
	private int maxOccupants;
	public int MaxOccupants { get { return maxOccupants; } set { this.maxOccupants = value; } }
	public string RoomCode { get; set; }
	public Room()
	{

	}

	public Room(string RoomName, float Price, int Floor, int MaxOccupants, string RoomCode)
	{
		this.RoomName = RoomName;
		this.Price = Price;
		this.Floor = Floor;
		this.MaxOccupants = MaxOccupants;
		this.RoomCode = RoomCode;
	}

	public void input()
    {
		Console.WriteLine("Enter the Name of the Room: ");
		RoomName = Console.ReadLine();

		Console.WriteLine("Enter the Code of the Room: ");
		RoomCode = Console.ReadLine();

		Console.WriteLine("Enter the Floor: ");
		string f = Console.ReadLine();
		while (!IsNumber(f)){
			Console.WriteLine("This need to be numeric input.");
			f = Console.ReadLine();
		}
		Floor = int.Parse(f);

		Console.WriteLine("Enter the Price: ");
		string p = Console.ReadLine();
		while (!IsNumber(p))
		{
			Console.WriteLine("This need to be numeric input.");
			p = Console.ReadLine();
		}
		Price = float.Parse(p);

		Console.WriteLine("Enter the amount of peoples: ");
		string m = Console.ReadLine();
		while (!IsNumber(m))
		{
			Console.WriteLine("This need to be numeric input.");
			m = Console.ReadLine();
		}
		MaxOccupants = int.Parse(m);

	}

	public void display()
    {
		Console.WriteLine("\nRoom Name: {0}\nRoom Code: {1}\nFloor: {2}\nPrice: {3}\nNo.Peoples: {4}",
			RoomName, RoomCode, Floor, Price, MaxOccupants);
    }

	static bool IsNumber(string value)
	{
		if (string.IsNullOrEmpty(value))
		{
			return false;
		}
		char[] c = value.ToCharArray();
		for (int i = 0; i < c.Length; i++)
		{
			if (!char.IsDigit(c[i]))
			{
				return false;
			}
		}

		return true;
	}
}

#Program.cs

using System;
using System.Collections.Generic;

namespace HotelManagement
{
    class Program
    {
        public static List<Customer> Customers = new List<Customer>();
        public static List<Hotel> Hotels = new List<Hotel>();
        public static List<Book> Books = new List<Book>();
        static bool IsNumber(string value)
        {
            if(string.IsNullOrEmpty(value))
            {
                return false;
            }
            char[] c = value.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                if (!char.IsDigit(c[i]))
                {
                    return false;
                }
            }

            return true;
        }

        static void ShowMenu()
        {
            Console.WriteLine("1. Insert new Hotels\n" + 
                "2. Display Hotels\n" + 
                "3. New Booking\n" + 
                "4. Find Rooms by Book Date and Return Date\n" +
                "5. Total profits from each Hotels\n" +
                "6. Find Customer by CMTND\n" +
                "7. Exit");
        }

        static void InputHotels()
        {
            Console.WriteLine("Please input the number of hotels to add:");
            string input = Console.ReadLine();
            while (!IsNumber(input))
            {
                Console.WriteLine("Wrote a number");
                input = Console.ReadLine();   
            }
            int N = int.Parse(input);
            for (int i = 0; i < N; i++)
            {
                Hotel h = new Hotel();
                h.input();
                Console.WriteLine("Input the number of rooms to add: ");
                input = Console.ReadLine();
                while (!IsNumber(input))
                {
                    Console.WriteLine("Wrote a number");
                    input = Console.ReadLine();
                }
                int NN = int.Parse(input);
                for (int j = 0; j < NN; j++)
                {
                    Room r = new Room();
                    r.input();
                    h.RoomList.Add(r);
                }
                Hotels.Add(h);
            }

        }

        static void DisplayHotels()
        {
            if (Hotels.Count == 0)
            {
                return;
            }
            foreach(Hotel h in Hotels)
            {
                h.display();
            }
        }

        static void NewBooking()
        {
            if(Hotels.Count == 0)
            {
                return;
            }
            Console.WriteLine("Input how many Room Book to make: ");
            string input = Console.ReadLine();
            while (!IsNumber(input))
            {
                Console.WriteLine("Wrote a number");
                input = Console.ReadLine();
            }
            int N = int.Parse(input);
            for (int i = 0; i < N; i++)
            {
                Book b = new Book();
                b.input(Customers, Hotels);
                Books.Add(b);
            }
        }
        static void FindRooms()
        {
            if (Books.Count == 0 || Hotels.Count == 0)
            {
                return;
            }
            Console.WriteLine("Enter the Book Date: ");
            DateTime bd = Convert.ToDateTime(Console.ReadLine());
            Console.WriteLine("Enter the Return Date: ");
            DateTime rd = Convert.ToDateTime(Console.ReadLine());
            foreach(Book b in Books){
                foreach(Hotel h in Hotels)
                {
                    if (h.Id == b.HotelCode)
                    {
                        if (b.ReturnDate <= rd && b.BookDate >= bd)
                        {
                            b.DisplayRoomMenu(h);
                        }
                        
                    }
                }
                
            }
                    
        }

        static void ShowProfits()
        {
            if (Hotels.Count == 0)
            {
                return;
            }
            float TotalProfits = 0;
            foreach(Hotel h in Hotels)
            {
                float HotelProfit = 0;
                for (int i = 0; i < h.RoomList.Count; i++)
                {
                    HotelProfit += h.RoomList[i].Price;
                    TotalProfits += h.RoomList[i].Price;
                }
                Console.WriteLine("Profits generated by hotel {0}: {1}", h.Name, HotelProfit);
            }

        }
        static void FindCustomer()
        {
            if (Customers.Count == 0)
            {
                return;
            }

            Console.WriteLine("Enter CMTND:");
            string str = Console.ReadLine();
            foreach(Customer c in Customers)
            {
                if(c.CMTND == str)
                {
                    c.display();
                }
            }
        }
        static void Main(string[] args)
        {
            
            int choose;
            do
            {
                ShowMenu();
                var input = Console.ReadLine();
                while (!IsNumber(input))
                {
                    input = Console.ReadLine();
                }
                choose = int.Parse(input);
                switch (choose)
                {
                    case 1:
                        InputHotels();
                        break;
                    case 2:
                        DisplayHotels();
                        break;
                    case 3:
                        NewBooking();
                        break;
                    case 4:
                        FindRooms();
                        break;
                    case 5:
                        ShowProfits();
                        break;
                    case 6:
                        FindCustomer();
                        break;
                    case 7:
                        break;
                    default:
                        Console.WriteLine("Enter valid number input");
                        break;
                }

            } while(choose != 7);
        }
    }
}

2021-06-03 08:55:59

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

namespace DevelopHoteProject.Modal
{
    class Hotel
    {
        public List<Room> RoomList  { get; set; }
        public string Id { get; set; }
        public string Name { get; set; }

        public string Lever { get; set; }

        public string Address { get; set; }

        public Hotel() { }
    }
}

2021-06-03 08:55:35

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

namespace DevelopHoteProject.Modal
{
    class Customer
    {
        public string IdentifyNumber { get; set; }
        public string Name { get; set; }
        public DateTime Birthday { get; set; }

        public string Gender { get; set; }
        public string Address { get; set; }

        public Customer() { }

        public Customer(string IdentifyNumber, string Name, DateTime Birthday, string Gender, string Address)
        {
            this.IdentifyNumber = IdentifyNumber;
            this.Name = Name;
            this.Birthday = Birthday;
            this.Gender = Gender;
            this.Address = Address;
        }

        public void Input()
        {
            Console.WriteLine("Nhap so CMT Khach Hang:");
            IdentifyNumber = Console.ReadLine();

            Console.WriteLine("Nhap Ten Khach Hang:");
            Name = Console.ReadLine();

            Console.WriteLine("Nhap Ngay Sinh Khach Hang theo Ngay/Thang/Nam");
            string str = Console.ReadLine();
            Birthday = ToDateTimeFromString(str);

            Console.WriteLine("Nhap Gioi tinh Khach Hang:");
            Gender = Console.ReadLine();

            Console.WriteLine("Nhap Dia chi Khach Hang:");
            Address = Console.ReadLine();
        }

        public string ToStringFromDateTime(DateTime datetime)
        {
            string date_str = datetime.ToString("dd/MM/yyyy HH:mm:ss");
            return date_str;
        }

        public DateTime ToDateTimeFromString(string dateStr)
        {
            DateTime Date = DateTime.ParseExact(dateStr, "dd/MM/yyyy HH:mm:ss",
                                       System.Globalization.CultureInfo.InvariantCulture);

            return Date;
        }
    }
}

2021-06-03 08:55:12

using System;
using System.Collections.Generic;
using DevelopHoteProject.Modal;

namespace DevelopHoteProject
{
    class Program
    {
        public static List<Hotel> HotelList = new List<Hotel>();
        public static List<Customer> CustomerList = new List<Customer>();
        public static List<Book> BookList = new List<Book>();
        static void Main(string[] args)
        {
   
        }
    }
}

2021-06-03 08:55:12

using System;
using System.Collections.Generic;
using DevelopHoteProject.Modal;

namespace DevelopHoteProject
{
    class Program
    {
        public static List<Hotel> HotelList = new List<Hotel>();
        public static List<Customer> CustomerList = new List<Customer>();
        public static List<Book> BookList = new List<Book>();
        static void Main(string[] args)
        {
   
        }
    }
}

2021-06-03 08:54:59

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

namespace DevelopHoteProject.Modal
{   
    class Room
    {
        public string Id { get; set; }
        public string Name { get; set; }
        public float Price { get; set; }
        public int Floor { get; set; }
        public int MaxPeople { get; set; }

        public Room() { }

        public Room(string Id, string Name, float Price, int Floor, int MaxPeople)
        {
            this.Id = Id;
            this.Name = Name;
            this.Price = Price;
            this.Floor = Floor;
            this.MaxPeople = MaxPeople;
        }

        public void Input()
        {
            Console.WriteLine("Nhap so ID cua phong:");
            Id = Console.ReadLine();

            Console.WriteLine("Nhap Ten Phong:");
            Name = Console.ReadLine();

            Console.WriteLine("Nhap gia phong: ");
            float Price = float.Parse(Console.ReadLine());
            

            Console.WriteLine("Nhap Tang:");
           Floor = Int32.Parse(Console.ReadLine());

            Console.WriteLine("Nhap so nguoi toi da:");
            MaxPeople = Int32.Parse(Console.ReadLine());
        }


        public void Display()
        {
            Console.WriteLine("ID Phong: {0}, Ten Phong: {1}, Gia Phong: {2}, Tang: {3}, So nguoi toi da {4}", Id,Name, Price,Floor,MaxPeople);
        }
    }
}

2021-06-03 08:49:25

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

namespace DevelopHoteProject.Modal
{
    class Book
    {
        public DateTime CheckInTime { get; set; }
        public DateTime CheckOutTime { get; set; }
        public string IdentifyNumberBooker { get; set; }
        public string HotelBookId { get; set; }
        public string RoomBookId { get; set; }

        public Book() { }

        public void Input()
        {
          
                Console.WriteLine("Nhap thoi gian checkin Ngay/thang/nam/gio/phut/giay:");
                string strIn = Console.ReadLine();
                CheckInTime = ToDateTimeFromString(strIn);

                Console.WriteLine("Nhap thoi gian checkout Ngay/thang/nam/gio/phut/giay:");
                string strOut = Console.ReadLine();
                CheckOutTime = ToDateTimeFromString(strOut);

            while (true)
            {
                bool exitsbooker = false;
                Console.WriteLine("Nhap so CMT nguoi dat phong:");
                IdentifyNumberBooker = Console.ReadLine();
                foreach (Customer customer in Program.CustomerList)
                {
                    if(customer.IdentifyNumber == IdentifyNumberBooker)
                    {
                        exitsbooker = true;
                        break;
                    }
                }
                if(exitsbooker == true)
                {
                    break;
                }else
                {
                    Console.WriteLine("Khach hang chua ton tai trong he thon, de nghi nhap thong tin khach hang:");
                    Customer customer = new Customer();
                    customer.Input();
                    Program.CustomerList.Add(customer);
                    break;
                }
            }

          
           
            while (true)
            {
                bool CheckId = false;
                Console.WriteLine("Nhap Id khach san dat phong:");
                string id = Console.ReadLine();
                foreach(Hotel hotel in Program.HotelList)
                {
                    if (id == hotel.Id)
                    {
                        CheckId = true;
                        HotelBookId = id;
                        break;
                    }
                }
                if(CheckId ==  true)
                {
                    break;
                }
                else
                {
                    Console.WriteLine("Nhap ID khach san sai, nhap lai:");
                }
            }


            while (true)
            {
                bool exitsIDRoom = false;
                Console.WriteLine("Nhap Id phong muon dat:");
                string idFind = Console.ReadLine();
                foreach (Hotel hotel in Program.HotelList)
                {
                    if(hotel.Id == HotelBookId)
                    {
                        foreach (Room room in hotel.RoomList)
                        {
                            if(room.Id == idFind)
                            {
                                RoomBookId = idFind;
                                exitsIDRoom = true;
                                break;
                            }
                        }
                    }
                }
                if(exitsIDRoom == true)
                {
                    break;
                }else
                {
                    Console.WriteLine("Khong co phong nao co dia chi Id phu hop, nhap lai:");
                }
                    
            }
           
            
        }

        public DateTime ToDateTimeFromString(string dateStr)
        {
            DateTime Date = DateTime.ParseExact(dateStr, "dd/MM/yyyy HH:mm:ss",
                                       System.Globalization.CultureInfo.InvariantCulture);

            return Date;
        }






    }
}

2021-06-02 14:23:37

#Program.cs

using System;
using System.Collections.Generic;
using QuanLyKhachSan.Modals;

namespace QuanLyKhachSan
{
    class Program
    {
        static List<Customer> custommerList = new List<Customer>();
        static List<Hotel> hotelList = new List<Hotel>();
        static List<Book> bookList = new List<Book>();
        static void Main(string[] args)
        {
            int choose = 0;
            do
            {
                showMenu();
                choose = int.Parse(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        AddHotels();
                        break;
                    case 2:
                        DisplayHotels();
                        break;
                    case 3:
                        AddBook();
                        break;
                    case 4:
                        SearchRoom();
                        break;
                    case 5:
                        MoneyCheck();
                        break;
                    case 6:
                        CMNDCheck();
                        break;
                    case 7:
                        Console.WriteLine("Tam biet!!");
                        break;
                    default:
                        Console.WriteLine("Nhap sai!!");
                        break;
                }
            } while (choose != 7);
        }

        private static void CMNDCheck()
        {
            Console.WriteLine("Nhap CMND can tim:");
            string cmnd = Console.ReadLine();
            int check = 0;
            foreach (Customer customer in custommerList)
            {
                if (customer.cmt == cmnd)
                {
                    check++;
                    Console.WriteLine("{0} da di den khach san:", customer.name);
                    break;
                }
            }
            foreach (Book book in bookList)
            {
                if(book.cmt == cmnd)
                {
                    foreach (Hotel hotel in hotelList)
                    {
                        if (hotel.hotelCode == book.hotelCode)
                        {
                            Console.WriteLine("{0}", hotel.name);
                        }
                    }
                }
            }
            if (check == 0) Console.WriteLine("Khong tim thay nguoi can tim!!");
        }

        private static void MoneyCheck()
        {
            foreach (Hotel hotel in hotelList)
            {
                float sum = 0;
                foreach (Room room in hotel.roomList)
                {
                    sum += room.price;
                }
                Console.WriteLine("So tien khach san {0} thu duoc ve la: {1}", hotel.name, sum);
            }
        }

        private static void SearchRoom()
        {
            Console.WriteLine("Nhap ngay lay phong (dd/MM/yyyy):");
            string bookdayString = Console.ReadLine();
            Console.WriteLine("Nhap ngay tra phong (dd/MM/yyyy):");
            string renderdayString = Console.ReadLine();
            int check = 0;
            foreach (Book book in bookList)
            {
                string bookDay = book.bookDay.ToString("dd/MM/yyyy");
                string renderDay = book.renderDay.ToString("dd/MM/yyyy");
                if(bookdayString.Equals(bookDay) && renderdayString.Equals(renderDay))
                {
                    check++;
                    foreach (Hotel hotel in hotelList)
                    {
                        foreach (Room room in hotel.roomList)
                        {
                            if(room.roomCode == book.roomCode)
                            {
                                Console.WriteLine("Khach san: {0}", hotel.name);
                                room.display();
                            }
                        }
                    }
                }
            }
            if (check == 0) Console.WriteLine("Khong co phong nao thoa man!!");
        }

        private static void AddBook()
        {
            Book book = new Book();
            Console.WriteLine("Nhap so CMND:");
            string cmnd = Console.ReadLine();
            int check = 0;
            book.cmt = cmnd;
            foreach (Customer customer in custommerList)
            {
                if(customer.cmt == cmnd)
                {
                    check++;
                    break;
                }
            }
            if(check == 0)
            {
                Console.WriteLine("Khach hang khong ton tai, yeu cau nhap thong tin khach hang:");
                Customer customer = new Customer();
                customer.cmt = cmnd;
                customer.input();
                custommerList.Add(customer);
            }
            Console.WriteLine("Nhap ngay lay phong (dd/MM/yyyy):");
            string bookdayString = Console.ReadLine();
            DateTime bookDay = DateTime.ParseExact(bookdayString, "dd/MM/yyyy", System.Globalization.CultureInfo.InvariantCulture);
            book.bookDay = bookDay;
            Console.WriteLine("Nhap ngay tra phong (dd/MM/yyyy):");
            string renderdayString = Console.ReadLine();
            DateTime renderDay = DateTime.ParseExact(renderdayString, "dd/MM/yyyy", System.Globalization.CultureInfo.InvariantCulture);
            book.renderDay = renderDay;
            Console.WriteLine("Nhap ma khach san:");
            while (true)
            {
                string hotelCode = Console.ReadLine();
                int check1 = 0;
                foreach (Hotel hotel in hotelList)
                {
                    if(hotel.hotelCode == hotelCode)
                    {
                        check1++;
                        book.hotelCode = hotelCode;
                        break;
                    }
                }
                if (check1 == 0) Console.WriteLine("Khong tim thay khach san, vui long nhap lai:");
                else break;
            }
            Console.WriteLine("Nhap ma phong:");
            while (true)
            {
                string hotelCode = book.hotelCode;
                string roomCode = Console.ReadLine();
                int check1 = 0;
                foreach (Hotel hotel in hotelList)
                {
                    if (hotel.hotelCode == hotelCode)
                    {
                        foreach (Room room in hotel.roomList)
                        {
                            if(room.roomCode == roomCode)
                            {
                                check1++;
                                book.roomCode = roomCode;
                                break;
                            }
                        }
                        break;
                    }
                }
                if (check1 == 0) Console.WriteLine("Khong tim thay phong, vui long nhap lai:");
                else break;
            }
            bookList.Add(book);
        }

        private static void DisplayHotels()
        {
            for (int i = 0; i < hotelList.Count; i++)
            {
                Console.WriteLine("Thong tin khach san thu " + (i + 1) + ":");
                hotelList[i].display();
            }
        }

        private static void AddHotels()
        {
            Console.WriteLine("Nhap so luong khach san muon them:");
            int hotelNum = int.Parse(Console.ReadLine());
            for (int i = 1; i <= hotelNum; i++)
            {
                Console.WriteLine("Nhap thong tin cho khach san thu " + i + ":");
                Hotel hotel = new Hotel();
                hotel.input();
                List<Room> roomList = new List<Room>();
                Console.WriteLine("Nhap so luong phong muon them:");
                int roomNum = int.Parse(Console.ReadLine());
                for (int j = 1; j <= roomNum; j++)
                {
                    Console.WriteLine("Nhap thong tin cho phong thu " + j + ":");
                    Room room = new Room();
                    room.input();
                    roomList.Add(room);
                }
                hotel.roomList = roomList;
                hotelList.Add(hotel);
            }
        }

        private static void showMenu()
        {
            Console.WriteLine("Lua chon chuong trinh:");
            Console.WriteLine("1.Nhap them khach san");
            Console.WriteLine("2.In toan bo thong tin lien quan den khach san");
            Console.WriteLine("3.Nhap thong tin dat phong");
            Console.WriteLine("4.Tim phong thoa man ngay");
            Console.WriteLine("5.Tong tien moi khach san thu duoc");
            Console.WriteLine("6.Nhap CMND de tim khach san nguoi no da den");
            Console.WriteLine("7.Thoat");
        }
    }
}

#Book.cs

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

namespace QuanLyKhachSan.Modals
{
    class Book
    {
        public DateTime bookDay { get; set; }
        public DateTime renderDay { get; set; }
        public string cmt { get; set; }
        public string hotelCode { get; set; }
        public string roomCode { get; set; }
    }
}

#Customer.cs

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

namespace QuanLyKhachSan.Modals
{
    class Customer
    {
        public string cmt { 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 cmt,string name, int age, string gender,string country)
        {
            this.cmt = cmt;
            this.name = name;
            this.age = age;
            this.gender = gender;
            this.country = country;
        }
        public void input()
        {
            Console.WriteLine("Ten:");
            name = Console.ReadLine();
            Console.WriteLine("Tuoi:");
            age = int.Parse(Console.ReadLine());
            Console.WriteLine("Gioi tinh:");
            gender = Console.ReadLine();
            Console.WriteLine("Que quan:");
            country = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("CMND: {0}, Ten: {1}, Tuoi: {2}, Gioi tinh: {3}, Que quan: {4}", cmt, name, age, gender, country);
        }
    }
}

#Hotel.cs

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

namespace QuanLyKhachSan.Modals
{
    class Hotel
    {
        public string name { get; set; }
        public string address { get; set; }
        public string hotelType { get; set; }
        public List<Room> roomList { get; set; }
        public string hotelCode { get; set; }

        public Hotel()
        {
            roomList = new List<Room>();
        }
        public Hotel(string name, string address, string hotelType, List<Room> roomList, string hotelCode)
        {
            this.name = name;
            this.address = address;
            this.hotelType = hotelType;
            this.roomList = roomList;
            this.hotelCode = hotelCode;
        }
        public void input()
        {
            Console.WriteLine("Ten:");
            name = Console.ReadLine();
            Console.WriteLine("Dia chi:");
            address = Console.ReadLine();
            Console.WriteLine("Loai khach san:");
            hotelType = Console.ReadLine();
            Console.WriteLine("Ma khach san:");
            hotelCode = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("Ten: {0}, Dia chi: {1}, Loai khach san: {2}, Ma khach san: {3}", name, address, hotelType, hotelCode);
            Console.WriteLine("Danh sach phong:");
            foreach (Room room in roomList)
            {
                room.display();
            }
        }
    }
}

#Room.cs

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

namespace QuanLyKhachSan.Modals
{
    class Room
    {
        public string name { get; set; }
        public float price { get; set; }
        public int floor { get; set; }
        public int maximumPeople { get; set; }
        public string roomCode { get; set; }
        public Room()
        {

        }
        public Room(string name, float price, int floor, int maximumPeople, string roomCode)
        {
            this.name = name;
            this.price = price;
            this.floor = floor;
            this.maximumPeople = maximumPeople;
            this.roomCode = roomCode;
        }
        public void input()
        {
            Console.WriteLine("Ten:");
            name = Console.ReadLine();
            Console.WriteLine("Gia:");
            price = float.Parse(Console.ReadLine());
            Console.WriteLine("Tang:");
            floor = int.Parse(Console.ReadLine());
            Console.WriteLine("So nguoi toi da:");
            maximumPeople = int.Parse(Console.ReadLine());
            Console.WriteLine("Ma phong:");
            roomCode = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("Ten: {0}, Gia: {1}, Tang: {2}, So nguoi toi da: {3}, Ma phong: {4}", name, price, floor, maximumPeople, roomCode);
        }
    }
}

2021-06-02 09:14:07

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 people { get; set; }
        public string coderoom { get; set; }

        public Room()
        {

        }
        public Room(string Name, int Price, int Floor, int PersonalMax, string coderoom)
        {
            this.Name = Name;
            this.Price = Price;
            this.Floor = Floor;
            this.people =people;
            this.coderoom = coderoom;
        }
        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:");
            people = Convert.ToInt32(Console.ReadLine());
            Console.WriteLine("Nhap Ma Phong:");
            coderoom = 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);
        }
    }
}

## room