StreamWrite-StreamRead 读写文本文件

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

 //添加命名空间
 using System.IO;

 namespace 读取文本文件
 {
     class Program
     {
         static void Main(string[] args)
         {
              //读取
             using (StreamReader sr = new StreamReader(@"C:\Users\Administrator\Desktop\电影.txt", Encoding.Default))
             {
                 //Console.WriteLine(sr.ReadLine());
                 while (!sr.EndOfStream)
                 {
                     Console.WriteLine(sr.ReadLine());
                 }
             }

             //写入
             //true 代表是追加文本还是覆盖文本
             using (StreamWriter sw = new StreamWriter(@"C:\Users\Administrator\Desktop\newnwe.txt", true))
             {
                 sw.Write("测试文本文段！");
             }

              Console.ReadKey();
         }
     }
 }