最近学习用C#写了几个程序，记录一下常用的几个操作，方便以后Copy

文件操作

FileStream fs = null;
try
{
    byte[] buf;
    FileStream fs = new FileStream(strSampleFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
    buf = new byte[fs.Length];
    fs.Read(buf, 0, buf.Length);
    fs.Close(); //需要显示关闭
}
catch(Except ex)
{
    Console.WriteLine(ex.Message);    
    if(null != fs)
        fs.Close(); //需要显示关闭
}
//使用using机制，会自动马上释放托管资源,可以不必显式调用Close()
byte[] buf;
using (Stream sin = new FileStream(strSampleFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
    buf = new byte[sin.Length];
    sin.Read(buf, 0, buff.Length);
}

网络通信 创建线程

/// TCP监听
private static void ListenClientConnect()  
{  
    IPAddress ip = IPAddress.Parse("0.0.0.0");
    sockSrv = new Socket(AddressFamily.InterNetwo