PDA后台运行、安装程序
////启动最新版本安装(后台安装模式),结束更新程序
//string cabPath = @"\Application Data\QY.DDM.PDA.CAB";
//string parm = @"/noaskdest /noui """ + cabPath + @"""";
//ProcessStartInfo psi = new ProcessStartInfo(@"\Windows\wceload.exe", parm);
//Process p = new Process();
//p.StartInfo = psi;
//bool res = p.Start();
//p.WaitForExit();