C#通过流写入一行数据到文件的方法

using System;using System.IO;public class WriteFileStuff { public static void Main() {  FileStream fs = new FileStream("c://tmp//WriteFileStuff.txt", FileMode.OpenOrCreate, FileAccess.Write);        StreamWriter sw = new StreamWriter(fs);  try {    sw.WriteLine("Howdy World.");  } finally {    if(sw != null) { sw.Close(); }  } }}