StreamReader和StreamWriter读取写入文本文件

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

namespace StreamReaderAndWriter
{
    class Program
    {
        static void Main(string[] args)
        {
            //一般用流的方法
            //StreamWriter(Stream stream);推荐使用，灵活便于理解多态
            //StreamWriter(string  path);写死了就是指向硬盘写文件
            string inpath = @"F:1.txt";
            string outpath = @"D:2.txt";
            //写
            using (Stream outStream = new FileStream(outpath, FileMode.Create))
            using (StreamWriter sw = new StreamWriter(outStream, Encoding.Default))
            {
                sw.Write("你好");
                sw.WriteLine("hehe");
                sw.WriteLine("111");
            }

            //读
            using (Stream intStream = new FileStream(inpath, FileMode.Open))
            using (StreamReader reader = new StreamReader(intStream, Encoding.Default))
            {
                /*
    string s = reader.ReadToEnd();
    Console.Write(s);*/
                /*
                string s1 = reader.ReadLine();
                Console.WriteLine(s1);
 
                string s2 = reader.ReadLine();
                Console.WriteLine(s2);
                    */
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    Console.WriteLine(line);
                }

            }

            Console.ReadKey();




        }
    }
}