C#实现象记事本里 写入尀读出 文字

using System.IO;
写入:
FileStream fs=new FileStream(@"d:\example.txt",FileMode.CreateAppend,FileAccess.Write);
StreamWriter sw=new StreamWriter(fs);
sw.WriteLine("hello");
sw.Flush();
sw.Close();
fs.Close();
读出:
FileStream fs=new FileStream(@"d:\example.txt",FileMode.Open,FileAccess.Read);
StreamReader sr=new StreamReader(fs);
string txt="";
While(true)
{
string temp=sr.ReadLine();
if(temp!=null)
txt+=temp+"\r\n";
else
break;
}
sr.Flush();
sr.Close();
fs.Close();
textbox1.Text=txt;

二楼的基本差不多了啊,不说了啊,走人;