var tempDir = @"D:\UploadFiles\SCADASetupWix.msi";
                var start = new ProcessStartInfo("msiexec.exe", "/i \"" + tempDir );
                start.WindowStyle = ProcessWindowStyle.Normal;
                start.CreateNoWindow = true;
                Process.Start(start);//.WaitForExit()

  Process prc = new Process();
            try
            {
                prc.StartInfo.FileName = @"C:\Users\Administrator\Desktop\SCADA\setupok.exe";
                prc.StartInfo.UseShellExecute = false;
                prc.StartInfo.RedirectStandardError = true;
                prc.StartInfo.RedirectStandardOutput = true;
                prc.StartInfo.RedirectStandardInput = true;
                prc.StartInfo.CreateNoWindow = false;
                prc.Start();
            }
            catch (Exception exU)
            {
                if (!prc.HasExited)
                {
                    prc.Close();
                }
                throw new Exception(exU.Message.ToString());
            }