c# 软件自动升级 程序自我关闭自己后重启

               //指定一个文件名，写入脚本
               string filename = Path.Combine(path,"killmyself.bat");
                using (StreamWriter bat = new StreamWriter(filename, false, Encoding.GetEncoding("GB2312")))
                {
                    //删除指定程序，复制指定程序到指定路径
                    bat.WriteLine(string.Format(@"
                    @echo off                                       
                    del "+ifexe+@"                   
                    copy /y  """+path+@"tempfileServer"+ifexe+@""" """+path+@"""
                    """+path+ifexe+ @"""
                     del %0
                    "));                   
                   //  del %0
                }
                ProcessStartInfo info = new ProcessStartInfo(filename);
                info.WindowStyle = ProcessWindowStyle.Hidden;
                Process.Start(info);
                Environment.Exit(0);