using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace 读写文件
{
class Program
{
static void Main(string[] args)
{
#region 读取
FileStream fsRead = new FileStream(@"C:\Users\Administrator\Desktop\毕毕.txt", FileMode.OpenOrCreate, FileAccess.Read);
//定义字节数组,每次读取多少
byte[] buffer = new byte[1024 * 1024 * 5];
int r = fsRead.Read(buffer, 0, buffer.Length);//返回一共读到的有效字节数
// MessageBox.Show(r.ToString());
//将字节数组中每一个元素按照指定的编码格式解码成字节串
string s = Encoding.UTF8.GetString(buffer, 0, r);
//关闭流
fsRead.Close();
//释放流所占用的资源
//实际上 还是读了5兆 只是显示了所读到的那些
fsRead.Dispose();
Console.WriteLine(s);
Console.ReadLine();
#endregion
#region 写入
//using (FileStream fswrite = new FileStream(@"C:\Users\Administrator\Desktop\毕毕.txt", FileMode.OpenOrCreate, FileAccess.Write))
//{
// //覆盖,覆盖所需占用的字节量
// string str = "yes";
// byte[] buffer = Encoding.UTF8.GetBytes(str);
// fswrite.Write(buffer, 0, buffer.Length);
//}
#endregion
}
}
}