C#文件相关的操作

static string ReadAllText(string log_file) //读取文件
{
FileStream fs = null;
StreamReader sr = null;
try
{
fs = new FileStream(log_file, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
sr = new StreamReader(fs, Encoding.UTF8);
return sr.ReadToEnd();
}
catch (Exception)
{
Console.Error.WriteLine(“Can’t read log {0}”, Path.GetFileName(log_file));
}
finally
{
if (sr != null) sr.Close();
if (fs != null) fs.Close();
}
return “”;
}

写文件也可用：
File.AppendAllText(“D:\Hexu\TestLog.txt”, sLogFilePath[0] + “\r\n”);
当然也可以用WriteStream的方法

http://www.cnblogs.com/RainbowInTheSky/p/5551146.html