C#实现的学生信息管理控制台程序

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
List<Student> lstStudent = new List<Student>(); 
bool flag = true;
 while (flag) { 
      Console.WriteLine("------------------------------------------------");
     Console.ForegroundColor = ConsoleColor.Red;
     Console.WriteLine("使用提示(按键-操作)： A-添加 D-删除 C-修改 L-查看");
     Console.ForegroundColor = ConsoleColor.Gray; Console.WriteLine("------------------------------------------------");
     ConsoleKey ck = Console.ReadKey(true).Key;
     switch (ck) {
         case ConsoleKey.A:
             { 
         Console.ForegroundColor = ConsoleColor.Red; Console.WriteLine("请输入学生相关信息"); 
         Console.ForegroundColor = ConsoleColor.Gray;
         Student stu = new Student();
         Console.Write("学号："); 
                 stu.stuNo = Console.ReadLine().Trim();
         Console.Write("姓名：");