C# 常用文件操作 文本文件 二进制文件 读写操作
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.IO;namespace text{ class Program { static void Main(string[] args) { FileStream fs = new FileStream("test.txt", FileMode.OpenOrCreate); BinaryWriter bw = new BinaryWriter(fs); bw.Write(1); bw.Write(2); bw.Write(3); bw.Close(); fs.Close(); Console.ReadKey(); Console.WriteLine(); FileStream fs2 = new FileStream("test.txt", FileMode.Open); BinaryReader br = new BinaryReader(fs2); int a = br.ReadInt32(); int b = br.ReadInt32(); int c = br.ReadInt32(); Console.WriteLine(a); Console.WriteLine(b); Console.WriteLine(c); br.Close(); fs2.Close(); Console.ReadKey(); FileStream fs3 = new FileStream("test2.txt", FileMode.Create); StreamWriter sw = new StreamWriter(fs3); sw.WriteLine("test from watkins"); sw.WriteLine("235"); sw.WriteLine(5); sw.WriteLine("hah"); sw.Close(); fs3.Close(); Console.ReadKey(); Console.WriteLine(); FileStream fs4 = new FileStream("test2.txt", FileMode.Open); StreamReader sr = new StreamReader(fs4); string s1 = sr.ReadLine(); string s2 = sr.ReadLine(); string s3 = sr.ReadLine(); string s4 = sr.ReadLine(); Console.WriteLine(s1); Console.WriteLine(s2); Console.WriteLine(s3); Console.WriteLine(s4); Console.ReadKey(); } }}