1、使用 FileStream 读写文件
添加命名空间引用:
using System; using System.Collections.Generic; using System.Text; using System.IO;
读取核心代码:
byte[] byData = new byte[100]; char[] charData = new char[1000]; try { FileStream sFile = new FileStream("文件路径",FileMode.Open); sFile.Seek(55, SeekOrigin.Begin); //第一个参数是被传进来的字节数组,用以接受FileStream对象中的数据,第2个参数是字节 // 数组中开始写入数据的位置,它通常是0,表示从数组的开端文件中向数组写数据, //最后一个参数规定从文件读多少字符. sFile.Read(byData, 0, 100); } catch (IOException e) { Console.WriteLine("An IO exception has been thrown!"); Console.WriteLine(e.ToString()); Console.ReadLine(); return; } Decoder d = Encoding.UTF8.GetDecoder(); d.GetChars(byData, 0, byData.Length, charData, 0); Console.WriteLine(charData); Console.ReadLine();
写入核心代码:
FileStream fs = new FileStream(文件路径,FileMode.Create); //获得字节数组 byte [] data =new UTF8Encoding().GetBytes(String); //开始写入 fs.Write(data,0,data.Length); //清空缓冲区、关闭流 fs.Flush(); fs.Close();
2、使用StreamReader和StreamWriter读写文件
StreamReader 读取文件:
StreamReader objReader = new StreamReader(文件路径); string sLine=""; ArrayList LineList = new ArrayList(); while (sLine != null) { sLine = objReader.ReadLine(); if (sLine != null&&!sLine.Equals("")) LineList.Add(sLine); } objReader.Close(); return LineList;
StreamWriter写文件:
FileStream fs = new FileStream(文件路径,FileMode.Create); StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.GetEncoding("GB2312"));//通过指定字符编码方式可以实现对汉字的支持,否则在用记事本打开查看会出现乱码 sw.Flush(); if (checkfile) { sw.BaseStream.Seek(0, SeekOrigin.End);//移动到结尾 } else { sw.BaseStream.Seek(0, SeekOrigin.Begin); } string temp = "随便写点东西"; sw.WriteLine(temp); sw.Flush(); sw.Close();fs.Close();
时间: 2024-11-10 14:45:26