C#实现写入文本文件内容功能

protected void Page_Load(object sender, EventArgs e)
{
Write_Txt("kuukkk","yyyyy","klcfdnhh");
}
private void Write_Txt(string str1, string str2, string str3)
{
string strYMD = System.DateTime.Now.ToString("yyyyMMdd");
string File_Name = @"D:\TestWeb\WriteTxt\" + strYMD + ".txt";//create a different file everyday.
StreamWriter sr;
if (File.Exists(File_Name))
{
sr = File.AppendText(File_Name);//追加文件內容
}
else
{
sr = File.CreateText(File_Name);
}
sr.WriteLine(str1 + " " + str2 + " " + DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss") + " " + str3 + "\r\n");
sr.Close();

}

運行結果：

20110425.txt文檔

aaaaaa bbbbbb 2008-04-25 01:51:38 cccccc

aaaaaa bbbbbb 2008-04-25 01:52:01 cccccc

kuukkk yyyyy 2008-04-25 01:52:40 klcfdnhh