//C#写TXT文档           String strDir = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase);            string filePath = strDir + "\\putin.txt";            FileStream fs = new FileStream(filePath, FileMode.Append);            StreamWriter sw = new StreamWriter(fs);            //开始写入            sw.Write(sUsr + "\r\n");            sw.Write(sPwd + "\r\n");            //清空缓冲区            sw.Flush();            //关闭流            sw.Close();            fs.Close()