FileStream myFs = new FileStream(txtFilePath, FileMode.Create);//txtFilePath为生成txt文件的路径

StreamWriter mySw = new StreamWriter(myFs);

mySw.WriteLine(writeStr);//writeStr为要写入的字符串

mySw.Close();

myFs.Close();

 /// <summary>

        /// WirteFile

        /// </summary>

        /// <param name="str"></param>

        private void WirteFile(string str)

        {

            if (!File.Exists(@"文件路径"))

            {

                try

                {

                    //创建文件

                    FileStream fs = new FileStream(@"文件路径", FileMode.Create, FileAccess.ReadWrite);

                    StreamWriter sw = new StreamWriter(fs);

                    //写入数据

                    sw.WriteLine(str);

                    sw.Close();

                    fs.Close();

                    //

                }

                catch()

                {



                }

            }

            else

            {

 

        &