c#学生信息管理系统

好的，一个学生信息管理系统一般需要以下功能：

1. 添加学生信息
2. 删除学生信息
3. 修改学生信息
4. 搜索学生信息
5. 显示所有学生信息

以下是一个简单的 C# 学生信息管理系统的代码示例：

using System;
using System.Collections.Generic;

namespace StudentManagementSystem
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Student> students = new List<Student>();

            while (true)
            {
                Console.WriteLine("Student Management System");
                Console.WriteLine("1. Add student");
                Console.WriteLine("2. Delete student");
                Console.WriteLine("3. Modify student");
                Console.WriteLine("4. Search student");
                Console.WriteLine("5. Show all students");
                Console.WriteLine("0. Exit");

                Console.Write("Please enter your choice: ");
                int choice = int.Parse(Console.ReadLine());

                switch (choice)
                {
                    case 1:
                        Console.Write("Please enter the student ID: ");
                        string id = Console.ReadLine();
                        Console.Write("Please enter the student name: ");
                        string name = Console.ReadLine();
                        Console.Write("Please enter the student age: ");
                        int age = int.Parse(Console.ReadLine());
                        Console.Write("Please enter the student gender (M/F): ");
                        char gender = char.Parse(Console.ReadLine());
                        students.Add(new Student(id, name, age, gender));
                        Console.WriteLine("Student added successfully.");
                        break;
                    case 2:
                        Console.Write("Please enter the student ID: ");
                        id = Console.ReadLine();
                        bool exists = false;
                        for (int i = 0; i < students.Count; i++)
                        {
                            if (students[i].ID == id)
                            {
                                students.RemoveAt(i);
                                Console.WriteLine("Student deleted successfully.");
                                exists = true;
                                break;
                            }
                        }
                        if (!exists)
                        {
                            Console.WriteLine("Student not found.");
                        }
                        break;
                    case 3:
                        Console.Write("Please enter the student ID: ");
                        id = Console.ReadLine();
                        exists = false;
                        for (int i = 0; i < students.Count; i++)
                        {
                            if (students[i].ID == id)
                            {
                                Console.Write("Please enter the student name: ");
                                name = Console.ReadLine();
                                Console.Write("Please enter the student age: ");
                                age = int.Parse(Console.ReadLine());
                                Console.Write("Please enter the student gender (M/F): ");
                                gender = char.Parse(Console.ReadLine());
                                students[i] = new Student(id, name, age, gender);
                                Console.WriteLine("Student modified successfully.");
                                exists = true;
                                break;
                            }
                        }
                        if (!exists)
                        {
                            Console.WriteLine("Student not found.");
                        }
                        break;
                    case 4:
                        Console.Write("Please enter the student ID: ");
                        id = Console.ReadLine();
                        exists = false;
                        for (int i = 0; i < students.Count; i++)
                        {
                            if (students[i].ID == id)
                            {
                                Console.WriteLine(students[i].ToString());
                                exists = true;
                                break;
                            }
                        }
                        if (!exists)
                        {
                            Console.WriteLine("Student not found.");
                        }
                        break;
                    case 5:
                        foreach (Student student in students)
                        {
                            Console.WriteLine(student.ToString());
                        }
                        break;
                    case 0:
                        Console.WriteLine("Exiting...");
                        return;
                    default:
                        Console.WriteLine("Invalid choice.");
                        break;
                }
            }
        }
    }

    class Student
    {
        public string ID { get; set; }
        public string Name { get; set; }
        public int Age { get; set; }
        public char Gender { get; set; }

        public Student(string id, string name, int age, char gender)
        {
            ID = id;
            Name = name;
            Age = age;
            Gender = gender;
        }

        public override string ToString()
        {
            return $"ID: {ID}, Name: {Name}, Age: {Age}, Gender: {Gender}";
        }
    }
}

这是一个简单的控制台应用程序，主要使用了 List<T> 类型来存储学生信息，通过循环菜单实现了添加、删除、修改、搜索和显示所有学生信息的功能。