By GokiSoft.com| 10:17 19/10/2021|

C Sharp

Chương trình quản lý sinh viên C# + Import/Export JSON + File - Lập Trình C# - Lập Trình C Sharp

I. Tạo lớp đối tượng sinh viên (Student) gồm các thuộc tính : fullname, birthday, email, address, gender

- Tạo hàm tạo ko đối và có đầy đủ đối số

- Tạo hàm getter & setter

- Tạo hàm nhập thông tin sinh và hiển thị thông tin sinh viên

II. Tạo lớp đối tượng lớp học (ClassRoom) gồm các thuôc tính : name, address và mảng danh sach sinh viên (List<Student> studentList)

- Tạo hàm tạo ko đối

- Tạo getter/setter

- Tạo hàm nhập và hiển thị thông tin sinh viên

III. Tạo lớp Main chứa mảng đối tượng ClassRoom

List<ClassRoom> classList = new ArrayList<>()

IV. Xây dựng menu chương trình sau

1. Nhập thông tin sinh viên từ file json (data.json -> xem nội dụng file đc import ở dưới)

2. Hiển thị thông tin sinh viên

3. Lưu thông tin mỗi lớp học vào 1 file ten_lop.obj

Chú thích :

Khi người dùng chọn 1 : thực hiện đọc dữ liệu từ file data.json và lưu thông tin đọc vào mảng classList

Khi người dùng chọn 2 : Hiển thị thông tin lớp học từ mảng classList

Khi người dùng chọn 3 : thực hiện lưu thông tin từng lớp học vào 1 file tương ứng (Ví dụ : T1801A.obj, ...)

JSON File

[
  {
    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {
    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

Phản hồi từ học viên

5

(Dựa trên đánh giá ngày hôm nay)

Trần Văn Lâm

2021-05-21 10:10:55

#Program.cs

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

namespace les4t1
{
    class Program
    {
        static void Main(string[] args)
        {
            List<ClassRoom> classRooms = new List<ClassRoom>();
            int choose;
            do
            {
                showMenu();
                choose = Convert.ToInt32(Console.ReadLine());

                switch (choose)
                {
                    case 1:
                         ImportJSON(classRooms);
                        break;
                    case 2:
                        Display(classRooms);
                        break;
                    case 3:
                        SaveFiles(classRooms);
                        break;
                    case 4:
                        Console.WriteLine("Exit!!!");
                        break;
                    default:
                        Console.WriteLine("Input Fail!!!");
                        break;
                }
            } while (choose != 4);
            
        }
        static void ImportJSON(List<ClassRoom> classRooms)
        {
            var content = System.IO.File.ReadAllText(@"data.json");
            Console.WriteLine(content);
            classRooms = Newtonsoft.Json.JsonConvert.DeserializeObject<List<ClassRoom>>(content);

            Console.WriteLine("Length: " + classRooms.Count);
            Display(classRooms);

        }
        static void Display(List<ClassRoom> classRooms)
        {
            foreach (ClassRoom classroom in classRooms)
            {
                classroom.Display();
            }
        }
        static void SaveFiles(List<ClassRoom> classRooms)
        {
            foreach(ClassRoom classroom in classRooms)
            {
                using (Stream stream = File.Open(classroom.Name+".obj", FileMode.Create))
                {
                    var binaryFormatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
                    binaryFormatter.Serialize(stream, classroom);
                }
            }
        }
        static void showMenu()
        {
            Console.WriteLine("1.Input data from file data.json");
            Console.WriteLine("2.Display Class Room");
            Console.WriteLine("3.Save");
            Console.WriteLine("4.Exit");
            Console.WriteLine("Choose");     
        }
    }
}

#Student.cs

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

namespace les4t1
{
    [Serializable]
    class Student
    {
        public string Fullname { set; get; }
        public string Birthday { get; set; }
        public string Email { set; get; }
        public string Address { set; get; }
        public string Gender { set; get; }
        
        public Student()
        {

        }
        public Student(string Fullname, string Birthday, string Email, string Address, string Gender)
        {
            this.Fullname = Fullname;
            this.Birthday = Birthday;
            this.Email = Email;
            this.Address = Address;
            this.Gender = Gender;
        }
        public void Input()
        {
            Console.WriteLine("Input fullname:");
            Fullname = Console.ReadLine();
            Console.WriteLine("Input birthday:");
            Birthday = Console.ReadLine();
            Console.WriteLine("Input email:");
            Email = Console.ReadLine();
            Console.WriteLine("Input address:");
            Address = Console.ReadLine();
            Console.WriteLine("Input gender:");
            Gender = Console.ReadLine();
        }
        public void Display()
        {
            Console.WriteLine("fullname : {0}, birthday : {1}, email : {2}, address : {3}, gender : {4}", Fullname, Birthday, Email, Address, Gender);
        }
    }
}

#ClassRoom.cs

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

namespace les4t1
{
    [Serializable]
    class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> studentList { get; set; }

        public ClassRoom()
        {
            studentList = new List<Student>();
        }
        public void Input()
        {
            Console.WriteLine("Input Name:");
            Name = Console.ReadLine();
            Console.WriteLine("Input Address:");
            Address = Console.ReadLine();
            Console.WriteLine("Input N Student:");
            int N = Convert.ToInt32(Console.ReadLine());
            for (int i = 0; i < N; i++ )
            {
                Student std = new Student();
                std.Input();
                studentList.Add(std);
            }
        }
        public void Display()
        {
            Console.WriteLine("Name : {0}, Address : {1}", Name, Address);
            foreach(Student std in studentList)
            {
                std.Display();
            }
        }
    }
}

#data.json

{
  [
    {
      "name": "T1801A",
      "address": "Detech Building",
      "studentList": [
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        },
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        },
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        }
      ]
    },
    {
      "name": "T1804M",
      "address": "Detech Building",
      "studentList": [
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        },
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        },
        {
          "fullname": "Tran Van A",
          "birthday": "01-01-19991",
          "email": "tranvana@gmail.com",
          "address": "Nam Dinh",
          "gender": "Nam"
        }
      ]
    }
  ]
}

Đỗ Minh Quân

2021-05-21 09:43:45

[
  {
    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {
    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

Đỗ Minh Quân

2021-05-21 09:43:21

using System;
using System.Collections.Generic;
using System.Text;
namespace Ql.sinhvien
{
    class Student
    {
        public string FullName { get; set; }
        public string Email { get; set; }
        public string BirthDay { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student(string fullName, string email, string birthDay, string address, string gender)
        {
            FullName = fullName;
            Email = email;
            BirthDay = birthDay;
            Address = address;
            Gender = gender;
        }

        public Student()
        {
        }
        public void input()
        {
            Console.WriteLine("Enter fullname : ");
            FullName = Console.ReadLine();
            Console.WriteLine("Enter birthday(MM/dd/yyyy) : ");
            BirthDay = Console.ReadLine();
            Console.WriteLine("Enter email : ");
            Email = Console.ReadLine();
            Console.WriteLine("Enter address : ");
            Address = Console.ReadLine();
            Console.WriteLine("Enter gender : ");
            Gender = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("----Full name : {0} , BirthDay : {1} , Email : {2} , Address : {3} , Gender : {4}", FullName, BirthDay, Email, Address, Gender);
        }
    }
}

Nguyên Phấn Đông

2021-05-21 09:21:20

#ClassRoom.cs

using System;


namespace buoi4
{
    [Serializable]
    class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> studentList { get; set; }

        public ClassRoom()
        {
            studentList = new List<Student>();
        }
        public void inputClassRoom()
        {
            Console.WriteLine("input nameclass");
            Name = Console.ReadLine();
            Console.WriteLine("input address");
            Address = Console.ReadLine();
            bool ischeck = true;
            Console.WriteLine("input num student");
            Int32 num = Convert.ToInt32(Console.ReadLine());
            for(Int32 i = 1, i <= num , i++)
            {
                Console.WriteLine(i);
                Student st = new Student();
                st.input();
                studentList.Add(st);
            }
            
        }
        public void display()
        {
            Console.WriteLine("NameClass={0},Address={1}", Name, Address);
            foreach (var item in studentList)
            {
                item.display();
            }
        }
    }
}

#data.json

[
  {
    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {
    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

#Main .cs

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Newtonsoft.Json;
namespace buoi4

public class Main
{
   

        static void Main(string[] args)
        {
        List<ClassRoom> classList = new ArrayList<>()
        do
        {
            showmenu();
            int choose = Convert.ToInt32(Console.ReadLine());
            switch (choose)
            {
                case 1:
                    class = importJSON(classList);
                    listclass(class);
                    break;
                case 2:
                    listclass(classList);
                    break;
                case 3:
                    exportJSON(classList);
                    break;
                case 4:
                    Console.WriteLine("Thoat !!");
                    break;

            }
        } while (choose != 4);
        public static void showmenu()
        {
            Console.WriteLine("1. Nhập thông tin sinh viên từ file json");
            Console.WriteLine("2. Hiển thị thông tin sinh viên");
            Console.WriteLine("3. Lưu thông tin mỗi lớp học vào 1 file ten_lop.obj");
            Console.WriteLine("4. Thoát");
            Console.WriteLine("Choose");
         }
        public static void listclass(List<ClassRoom> classList)
        {

            Console.WriteLine("Danh sach sinh vien theo classroom");
            foreach (var item in classList)
            {
                item.display();
            }
        }
        static void exportJSON(List<ClassRoom> classRooms)
        {
            foreach (ClassRoom classroom in classRooms)
            {


                using (StreamWriter file = File.CreateText(@"C:/Users/dong/source/repos/CMakeProject1/buoi4/" + classroom.name + ".obj"))
                {
                    JsonSerializer serializer = new JsonSerializer();
                    serializer.Serialize(file, classroom);
                }
            }
        static List<ClassRoom> importJSON(List<ClassRoom> classRooms)
        {
            var content = File.ReadAllText(@"C:/Users/dong/source/repos/CMakeProject1/buoi4/data.json");
            classRooms = JsonConvert.DeserializeObject<List<ClassRoom>>(content);


            return classRooms;
        }
    }
}

#stuednt.cs

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

namespace buoi4
{
    class Student
    {
        public string Fullname { get; set; }
        public string Birthday { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student() { }
        public Student(string Fullname, string Birthday, string Email, string Address, string Gender)
        {
            this.Fullname = Fullname;
            this.Birthday = Birthday;
            this.Email = Email;
            this.Address = Address;
            this.Gender = Gender;

        }
        public void display()
        {
            Console.WriteLine("FullName ={0},Birthday={1},Email={2},Address={3},Gender={4}", Fullname, Birthday, Email, Address, Gender);
        }
        public void input()
        {
            Console.WriteLine("input fullname: ");
            Fullname = Console.ReadLine();
            Console.WriteLine("input birthday:");
            Birthday = Console.ReadLine();
            Console.WriteLine("input email");
            Email = Console.ReadLine();
            Console.WriteLine("input address:");
            Address = Console.ReadLine();
            Console.WriteLine("input gender:");
            Gender = Console.ReadLine();
        }


    }
}

Nguyễn Tiến Đạt

2021-05-21 09:00:30

#Program.cs

using System;
using System.Collections.Generic;
using QuanLySinhVien.Modals;

namespace QuanLySinhVien
{
    class Program
    {
        static void Main(string[] args)
        {
            List<ClassRoom> classList = new List<ClassRoom>();
            int choose=0;
            do
            {
                showMenu();
                choose = int.Parse(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        string content = System.IO.File.ReadAllText(@"data.json");
                        classList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<ClassRoom>>(content);
                        Console.WriteLine("Lay du lieu thanh cong!!");
                        break;
                    case 2:
                        foreach (ClassRoom classroom in classList)
                        {
                            Console.WriteLine("Ten lop: {0}", classroom.name);
                            Console.WriteLine("Dia chi: {0}", classroom.address);
                            classroom.display();
                        }
                        break;
                    case 3:
                        foreach (ClassRoom classroom in classList)
                        {
                            string text = "Dia chi lop: " + classroom.address + "\n";
                            foreach(Student std in classroom.studentList)
                            {
                                text += std.chuoi();
                            }
                            System.IO.File.WriteAllText(classroom.name + ".json", text);
                        }
                        Console.WriteLine("Luu thanh cong!!");
                        break;
                    case 4:
                        Console.WriteLine("Tam biet!!");
                        break;
                    default:
                        Console.WriteLine("Loi nhap!!");
                        break;
                }
            } while (choose != 4);

        }
        static void showMenu()
        {
            Console.WriteLine("Lua chon chuong trinh:");
            Console.WriteLine("1.Nhap thong tin sinh vien tu file json");
            Console.WriteLine("2.Hien thi thong tin sinh vien");
            Console.WriteLine("3.Luu tung lop hoc");
            Console.WriteLine("4.Thoat");
        }
    }
}

#ClassRoom.cs

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

namespace QuanLySinhVien.Modals
{
    class ClassRoom
    {
        public string name { get; set; }
        public string address { get; set; }
        public List<Student> studentList = new List<Student>();
        public ClassRoom()
        {

        }
        public void input()
        {
            Console.WriteLine("Nhap ten lop:");
            name = Console.ReadLine();
            Console.WriteLine("Nhap dia chi lop:");
            address = Console.ReadLine();
        }
        public void display()
        {
            foreach(Student std in studentList)
            {
                std.display();
            }
        }
    }
}

#Student.cs

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

namespace QuanLySinhVien.Modals
{
    class Student
    {
        public string fullname { get; set; }
        public string birthday { get; set; }
        public string email { get; set; }
        public string address { get; set; }
        public string gender { get; set; }
        public Student()
        {

        }
        public Student(string fullname, string birthday, string email, string address, string gender)
        {
            this.fullname = fullname;
            this.birthday = birthday;
            this.email = email;
            this.address = address;
            this.gender = gender;
        }
        public void input()
        {
            Console.WriteLine("Nhap ten:");
            fullname = Console.ReadLine();
            Console.WriteLine("Nhap ngay sinh:");
            birthday = Console.ReadLine();
            Console.WriteLine("Nhap email:");
            email = Console.ReadLine();
            Console.WriteLine("Nhap dia chi:");
            address = Console.ReadLine();
            Console.WriteLine("Nhap gioi tinh:");
            gender = Console.ReadLine();
        }
        public void display()
        {
            Console.WriteLine("Ho va ten: {0}, Ngay sinh: {1}, Email: {2}, Dia chi: {3}, Gioi tinh: {4}", fullname, birthday, email, address, gender);
        }
        public string chuoi()
        {
            return "Ho va ten: " + fullname + ", Ngay sinh: " + birthday + ", Email: " + email + ", Dia chi: " + address + ", Gioi tinh: " + gender + "\n";
        }
    }
}

#data.json

[
  {
    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {
    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

#T1801A.json

Dia chi lop: Detech Building
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam

#T1804M.json

Dia chi lop: Detech Building
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam
Ho va ten: Tran Van A, Ngay sinh: 01-01-19991, Email: tranvana@gmail.com, Dia chi: Nam Dinh, Gioi tinh: Nam

Nguyễn Hoàng Anh

2020-07-06 15:33:15


using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace StudentManager
{
    class Program
    {
        static void menu() {
            Console.WriteLine("0.Create student json file.");
            Console.WriteLine("1.Import student from json file.");
            Console.WriteLine("2.Show student.");
            Console.WriteLine("3.Save student file to ten_lop.obj.");
            Console.WriteLine("4.Exit.");
        }

        static void Main(string[] args)
        {
            string dir = "my_json.text";
            List<ClassRoom> classRooms = new List<ClassRoom>();
            List<ClassRoom> objs = new List<ClassRoom>();
                  
            while (true) {
                menu();
                int choice = int.Parse(Console.ReadLine());
                switch (choice) {
                    case 0:
                        ClassRoom classRoom = new ClassRoom();
                        classRoom.input();
                        classRooms.Add(classRoom);
                        try
                        {
                            string json = JsonConvert.SerializeObject(classRooms);
                            Console.WriteLine(json);

                            FileStream file = File.Create(dir);
                            file.Close();
                            System.IO.File.WriteAllText(dir, json);
                        }
                        catch (SerializationException e)
                        {
                            Console.WriteLine(e);
                        }
                        break;
                    case 1:
                        string strings = System.IO.File.ReadAllText(dir);
                        objs = JsonConvert.DeserializeObject<List<ClassRoom>>(strings);                
                        break;
                    case 2:
                        for (int i = 0; i < objs.Count; i++)
                        {
                            objs[i].display();
                        }
                        break;
                    case 3:
                        IFormatter formatter = new BinaryFormatter();
                        Stream stream = new FileStream("ten_lop.obj", FileMode.Create, FileAccess.Write);
                        formatter.Serialize(stream, objs);
                        stream.Close();

                        break;
                    case 5:
                        IFormatter formatter_ = new BinaryFormatter();
                        Stream stream_ = new FileStream("ten_lop.obj", FileMode.Open, FileAccess.Read);
                        List<ClassRoom> classRoomms = (List<ClassRoom>)formatter_.Deserialize(stream_);
                        for (int i = 0; i < classRoomms.Count; i++) {
                            classRoomms[i].display();
                        }
                        stream_.Close();

                        break;
                    case 4:
                        return;

                }
            }
        }
    }
}

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

namespace StudentManager
{
    [Serializable]
    class Student
    {
        public string FullName { get; set; }
        public string Email { get; set; }
        public string BirthDay { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student(string fullName, string email, string birthDay, string address, string gender)
        {
            FullName = fullName;
            Email = email;
            BirthDay = birthDay;
            Address = address;
            Gender = gender;
        }

        public Student()
        {
        }
        public void input() {
            Console.WriteLine("Enter fullname : ");
            FullName = Console.ReadLine();
            Console.WriteLine("Enter birthday(MM/dd/yyyy) : ");
            BirthDay = Console.ReadLine();
            Console.WriteLine("Enter email : ");
            Email = Console.ReadLine();
            Console.WriteLine("Enter address : ");
            Address = Console.ReadLine();
            Console.WriteLine("Enter gender : ");
            Gender = Console.ReadLine();
        }
        public void display() {
            Console.WriteLine("----Full name : {0} , BirthDay : {1} , Email : {2} , Address : {3} , Gender : {4}",FullName,BirthDay,Email,Address,Gender);
        }
    }
}

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

namespace StudentManager
{
    [Serializable]
    class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> StudentList { get; set; }

        public ClassRoom()
        {
            StudentList = new List<Student>();
        }
        public void input() {
            Console.WriteLine("Enter name : ");
            Name = Console.ReadLine();
            Console.WriteLine("Enter address : ");
            Address = Console.ReadLine();
            Console.WriteLine("Enter number student : ");
            int n = int.Parse(Console.ReadLine());
            for(int i = 0; i  < n; i++)
            {
                Console.WriteLine("Enter student {0} infomation.",(i + 1));
                Student std = new Student();
                std.input();
                StudentList.Add(std);
            }
        }
        public void display() {
            Console.WriteLine("Class Name : {0} , Address : {1} ", Name, Address);
            for (int i = 0; i < StudentList.Count; i++) {
                StudentList[i].display();
            }
        }
    }
}

trung

2020-07-06 14:30:46

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

namespace qlsv
{
    [Serializable]
    public class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> ListStudent { get; set; }
        public ClassRoom()
        {

        }

        public void Input()
        {
            ListStudent = new List<Student>();
            Console.WriteLine("Input classroom name:");
            Name = Console.ReadLine();
            Console.WriteLine("Input classroom address:");
            Address = Console.ReadLine();
            int i = 1;
            do
            {
                Console.WriteLine("Input information for student number " + (i));
                Student std = new Student();
                std.Input();
                ListStudent.Add(std);
                Console.WriteLine("Add more student ? (y/n)");
                i++;
            } while (Console.ReadLine().Equals("y"));
        }

        public void Output()
        {
            Console.WriteLine("Classroom name:" + Name);
            Console.WriteLine("Address: " + Address);
            Console.WriteLine("List student is : ");
            foreach(Student std in ListStudent)
            {
                std.Output();
            }
        }
    }
}

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

namespace qlsv
{
    [Serializable]
    public class Student
    {
        public string FullName { get; set; }
        public string BirthDay { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student()
        {

        }

        public Student(string fullName, string birthDay, string email, string address, string gender)
        {
            FullName = fullName;
            BirthDay = birthDay;
            Email = email;
            Address = address;
            Gender = gender;
        }

        public void Input()
        {
            Console.WriteLine("Input fullname");
            FullName = Console.ReadLine();
            Console.WriteLine("Input birth day");
            BirthDay = Console.ReadLine();
            Console.WriteLine("Input email");
            Email = Console.ReadLine();
            Console.WriteLine("Input address");
            Address = Console.ReadLine();
            Console.WriteLine("Input gender");
            Gender = Console.ReadLine();
        }

        public void Output()
        {

            Console.WriteLine("Fullname: {0}",FullName);
            Console.WriteLine("Birthday: {0}", BirthDay);
            Console.WriteLine("Email: {0}", Email);
            Console.WriteLine("Address: {0}", Address);
            Console.WriteLine("Gender: {0}", Gender);
        }
    }
}

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

namespace qlsv
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //tao json file
            /*List<ClassRoom> classList = new List<ClassRoom>();
            do
            {
                ClassRoom newClr = new ClassRoom();
                newClr.Input();
                classList.Add(newClr);
                Console.WriteLine("Continue adding classroom (y/n) ?");
            } while (Console.ReadLine().Equals("y"));

            string jsonString = Newtonsoft.Json.JsonConvert.SerializeObject(classList);
            Console.WriteLine(jsonString);
            System.IO.File.WriteAllText(@"test.json", jsonString);
            */
            int choice = 0;
            List<ClassRoom> realClassList = new List<ClassRoom>();
            do
            {
                ShowMenu();
                choice = int.Parse(Console.ReadLine());
                switch(choice)
                {
                    case 1:
                        string resultStr = System.IO.File.ReadAllText(@"test.json");
                        dynamic test = Newtonsoft.Json.JsonConvert.DeserializeObject(resultStr);
                        realClassList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<ClassRoom>>(resultStr);
                        foreach(ClassRoom clr in realClassList)
                        {
                            clr.Output();
                        }
                        break;
                    case 2:
                        foreach(ClassRoom clr in realClassList)
                        {
                            foreach(Student std in clr.ListStudent)
                            {
                                std.Output();
                            }
                        }
                        break;
                    case 3:
                        foreach (ClassRoom clr in realClassList)
                        {
                            using (Stream stream = File.Open((clr.Name+".obj"), FileMode.Create))
                            {
                                var bformatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
                                bformatter.Serialize(stream, clr);
                            }
                            
                        }
                        break;
                    case 4:
                        Console.WriteLine("bye bye ...");
                        break;
                    default:
                        Console.WriteLine("Invalid input...");
                        break;
                }
            } while (choice != 4);
            
            
        }

        public static void ShowMenu()
        {
            Console.WriteLine("1. Nhập thông tin sinh viên từ file json");
            Console.WriteLine("2. Hiển thị thông tin sinh viên");
            Console.WriteLine("3. Lưu thông tin mỗi lớp học vào 1 file ten_lop.obj");
            Console.WriteLine("4. Exit");
        }
    }
}

Ngô Quang Huy

2020-07-06 14:09:36

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Serialization;

namespace Menu
{
    class Program
    {

        static List<ClassRoom> classList = new List<ClassRoom>();
        static void Main(string[] args)
        {
            while (true)
            {
                showMenu();
                int choose = int.Parse(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        Import();
                        break;
                    case 2:
                        Display();
                        break;
                    case 3:
                        Save();
                        break;
                    default:
                        break;
                }
            }
        }

        static void showMenu()
        {
            Console.WriteLine("\n1. Import from file JSON");
            Console.WriteLine("2. Display student from class");
            Console.WriteLine("3. Save to class_name.obj");
            Console.Write("Choose: ");
        }

        static void Import()
        {
            string text = System.IO.File.ReadAllText(@"C:\\Users\\student.APROTRAIN-APTEC\\Desktop\\data.json");
            classList = JsonConvert.DeserializeObject<List<ClassRoom>>(text);
            
        }

        static void Display()
        {
            foreach (ClassRoom cls in classList)
            {
                cls.output();
            }
        }

        static void Save()
        {
            foreach (ClassRoom cls in classList)
            {
                using (Stream stream = File.Open(cls.name+".obj", FileMode.Create))
                {
                    var binaryFormatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
                    binaryFormatter.Serialize(stream, cls);
                }
            }
            Console.WriteLine("Save!!");
        }
    }
}

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

namespace Menu
{
    [Serializable]
    class Student
    {
        public string fullname { get; set; }
        public string birthday { get; set; }
        public string email { get; set; }
        public string address { get; set; }
        public string gender { get; set; }

        public Student()
        {

        }

        public Student(string fullname, string birthday, string email, string address, string gender)
        {
            this.fullname = fullname;
            this.birthday = birthday;
            this.email = email;
            this.address = address;
            this.gender = gender;
        }

        public void input()
        {
            Console.WriteLine("Insert fullname: ");
            fullname = Console.ReadLine();
            Console.WriteLine("Insert birthday: ");
            birthday = Console.ReadLine();
            Console.WriteLine("Insert email: ");
            email = Console.ReadLine();
            Console.WriteLine("Insert address: ");
            address = Console.ReadLine();
            Console.WriteLine("Insert gender: ");
            gender = Console.ReadLine();
        }

        public void output()
        {
            Console.WriteLine("fullname: {0}; birthday: {1}; email: {2}; address: {3}; gender: {4} ", fullname, birthday, email, address, gender);
        }
    }
}

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

namespace Menu
{
    [Serializable]
    class ClassRoom
    {
        public string name { get; set; }
        public string address { get; set; }
        public List<Student> studentList { get; set; }
        //List<Student> studentList = new List<Student>();

        public ClassRoom()
        {
            studentList = new List<Student>();
        }

        public void input()
        {
            Console.WriteLine("Insert name: ");
            name = Console.ReadLine();
            Console.WriteLine("Insert address: ");
            address = Console.ReadLine();
            while (true)
            {
                Student std1 = new Student();
                std1.input();
                studentList.Add(std1);
                Console.WriteLine("Continue? y/n");
                string confirm = Console.ReadLine();
                if (confirm.Equals("n"))
                {
                    break;
                }
            }
        }

        public void output()
        {
            Console.WriteLine("name: {0}; address: {1}", name, address);
            foreach (Student tmp in studentList)
            {
                tmp.output();
            }
        }
    }
}

Luong Dinh Dai

2020-06-04 08:50:46

#classRomm.json

{
		"information": {
			"name": "T1801A",
			"address": "Detech Building"
		},
		"studentList": [
			{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			},{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			},{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			}
		]
	}

#ClassRoom.cs

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

namespace ReadWriteFile
{
    [Serializable]
    class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> studentList { get; set; }

        public ClassRoom()
        {
            studentList = new List<Student>();
        }
        public void inputClassRoom()
        {
            Console.WriteLine("input nameclass");
            Name = Console.ReadLine();
            Console.WriteLine("input address");
            Address = Console.ReadLine();
            bool ischeck = true;
            while (ischeck)
            {
                Student st = new Student();
                st.input();
                studentList.Add(st);
                Console.WriteLine("Ban co muon tiep tuc them sv ko");
                Console.WriteLine("1. Yes");
                Console.WriteLine("2. No");
                int choose = Convert.ToInt32(Console.ReadLine());
                if (choose == 1)
                    ischeck = false;

            }
        }
        public void display()
        {
            Console.WriteLine("NameClass={0},Address={1}",Name,Address);
            foreach (var item in studentList)
            {
                Console.WriteLine("chay voa day");
                item.display();
            }
        }
    }
}

#data.json

[
  {

    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {

    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

#Manage.cs

using Nancy.Json;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection.Metadata.Ecma335;
using System.Text;
using System.Xml.Serialization;


namespace ReadWriteFile
{
    class Manage
    {


        public static void showInfoClassList(List<ClassRoom> classList)
        {
            
            Console.WriteLine("Danh sach sinh vien theo classroom");
            foreach (var item in classList)
            {
                item.display();
            }
        }
        public static void ImportJson()
        {
            List<ClassRoom> classList = new List<ClassRoom>();
            string _url = "D:\\C#nangcao\\C#FPT\\T1907A\\ReadWriteFile\\data.json";
            String st = File.ReadAllText(_url);

            classList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<ClassRoom>>(st);
            Console.WriteLine(classList.Count);
            foreach (var item in classList)
            {
                item.display();
            }
                

        }
    }
}

#Program.cs

using System;

namespace ReadWriteFile
{
    class Program
    {
        static void Main(string[] args)
        {
            int choose;
            do
            {
                showmenu();
                choose = Convert.ToInt32(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        Manage.ImportJson();
                        break;
                }

            } while (true);
        }
        public static void showmenu()
        {
            Console.WriteLine("1. Nhập thông tin sinh viên từ file json");
            Console.WriteLine("2. Hiển thị thông tin sinh viên");
            Console.WriteLine("3. Lưu thông tin mỗi lớp học vào 1 file ten_lop.obj");
            Console.WriteLine("Choose");
        }

    }
}

#Student.cs

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

namespace ReadWriteFile
{
    class Student
    {
        public string Fullname { get; set; }
        public string Birthday { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student() { }
        public void display()
        {
            Console.WriteLine("FullName ={0},Birthday={1},Email={2},Address={3},Gender={4}",Fullname,Birthday,Email,Address,Gender);
        }
        public void input()
        {
            Console.WriteLine("input fullname ");
            Fullname = Console.ReadLine();
            Console.WriteLine("input birthday");
            Birthday = Console.ReadLine();
            Console.WriteLine("input email");
            Email = Console.ReadLine();
            Console.WriteLine("input address");
            Address = Console.ReadLine();
            Console.WriteLine("input gender");
            Gender = Console.ReadLine();
        }

        
    }
}

thienphu

2020-06-02 13:07:56

#classRomm.json

{
		"information": {
			"name": "T1801A",
			"address": "Detech Building"
		},
		"studentList": [
			{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			},{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			},{
				"fullname": "Tran Van A",
				"birthday": "01-01-19991",
				"email": "tranvana@gmail.com",
				"address": "Nam Dinh",
				"gender": "Nam"
			}
		]
	}

#ClassRoom.cs

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

namespace ReadWriteFile
{
    [Serializable]
    class ClassRoom
    {
        public string Name { get; set; }
        public string Address { get; set; }
        public List<Student> studentList { get; set; }

        public ClassRoom()
        {
            studentList = new List<Student>();
        }
        public void inputClassRoom()
        {
            Console.WriteLine("input nameclass");
            Name = Console.ReadLine();
            Console.WriteLine("input address");
            Address = Console.ReadLine();
            bool ischeck = true;
            while (ischeck)
            {
                Student st = new Student();
                st.input();
                studentList.Add(st);
                Console.WriteLine("Ban co muon tiep tuc them sv ko");
                Console.WriteLine("1. Yes");
                Console.WriteLine("2. No");
                int choose = Convert.ToInt32(Console.ReadLine());
                if (choose == 1)
                    ischeck = false;

            }
        }
        public void display()
        {
            Console.WriteLine("NameClass={0},Address={1}",Name,Address);
            foreach (var item in studentList)
            {
                Console.WriteLine("chay voa day");
                item.display();
            }
        }
    }
}

#data.json

[
  {

    "name": "T1801A",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  },
  {

    "name": "T1804M",
    "address": "Detech Building",
    "studentList": [
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      },
      {
        "fullname": "Tran Van A",
        "birthday": "01-01-19991",
        "email": "tranvana@gmail.com",
        "address": "Nam Dinh",
        "gender": "Nam"
      }
    ]
  }
]

#Manage.cs

using Nancy.Json;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection.Metadata.Ecma335;
using System.Text;
using System.Xml.Serialization;


namespace ReadWriteFile
{
    class Manage
    {


        public static void showInfoClassList(List<ClassRoom> classList)
        {
            
            Console.WriteLine("Danh sach sinh vien theo classroom");
            foreach (var item in classList)
            {
                item.display();
            }
        }
        public static void ImportJson()
        {
            List<ClassRoom> classList = new List<ClassRoom>();
            string _url = "D:\\C#nangcao\\C#FPT\\T1907A\\ReadWriteFile\\data.json";
            String st = File.ReadAllText(_url);

            classList = Newtonsoft.Json.JsonConvert.DeserializeObject<List<ClassRoom>>(st);
            Console.WriteLine(classList.Count);
            foreach (var item in classList)
            {
                item.display();
            }
                

        }
    }
}

#Program.cs

using System;

namespace ReadWriteFile
{
    class Program
    {
        static void Main(string[] args)
        {
            int choose;
            do
            {
                showmenu();
                choose = Convert.ToInt32(Console.ReadLine());
                switch (choose)
                {
                    case 1:
                        Manage.ImportJson();
                        break;
                }

            } while (true);
        }
        public static void showmenu()
        {
            Console.WriteLine("1. Nhập thông tin sinh viên từ file json");
            Console.WriteLine("2. Hiển thị thông tin sinh viên");
            Console.WriteLine("3. Lưu thông tin mỗi lớp học vào 1 file ten_lop.obj");
            Console.WriteLine("Choose");
        }

    }
}

#Student.cs

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

namespace ReadWriteFile
{
    class Student
    {
        public string Fullname { get; set; }
        public string Birthday { get; set; }
        public string Email { get; set; }
        public string Address { get; set; }
        public string Gender { get; set; }

        public Student() { }
        public void display()
        {
            Console.WriteLine("FullName ={0},Birthday={1},Email={2},Address={3},Gender={4}",Fullname,Birthday,Email,Address,Gender);
        }
        public void input()
        {
            Console.WriteLine("input fullname ");
            Fullname = Console.ReadLine();
            Console.WriteLine("input birthday");
            Birthday = Console.ReadLine();
            Console.WriteLine("input email");
            Email = Console.ReadLine();
            Console.WriteLine("input address");
            Address = Console.ReadLine();
            Console.WriteLine("input gender");
            Gender = Console.ReadLine();
        }

        
    }
}

Chương trình quản lý sinh viên C# + Import/Export JSON + File - Lập Trình C# - Lập Trình C Sharp

Tags:

Phản hồi từ học viên

5

Trần Văn Lâm

#Program.cs

#Student.cs

#ClassRoom.cs

#data.json

Đỗ Minh Quân

Đỗ Minh Quân

Nguyên Phấn Đông

#ClassRoom.cs

#data.json

#Main .cs

#stuednt.cs

Nguyễn Tiến Đạt

#Program.cs

#ClassRoom.cs

#Student.cs

#data.json

#T1801A.json

#T1804M.json

Nguyễn Hoàng Anh

trung

Ngô Quang Huy

Luong Dinh Dai

#classRomm.json

#ClassRoom.cs

#data.json

#Manage.cs

#Program.cs

#Student.cs

thienphu

#classRomm.json

#ClassRoom.cs

#data.json

#Manage.cs

#Program.cs

#Student.cs