private int runProcess(string fileName, string appParam)        {            int returnValue = -1;            try            {                Process myProcess = new Process();                ProcessStartInfo myProcessStartInfo = new ProcessStartInfo(fileName, appParam);                myProcessStartInfo.CreateNoWindow = true;                myProcessStartInfo.WindowStyle = ProcessWindowStyle.Hidden;                myProcess.StartInfo = myProcessStartInfo;                myProcess.Start();                while (!myProcess.HasExited)                {                    myProcess.WaitForExit();                }                returnValue = myProcess.ExitCode;                myProcess.Dispose();                myProcess.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message.ToString());            }            return returnValue;        }

 1、启动*.exe程序

　　System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo();    startInfo.Arguments = String.Format("{0}  {1}  {2}", columnStr, tempFilePath, "True");    startInfo.FileName = this.applicationPath + "\\Excel.exe";    startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Normal;    System.Diagnostics.Process process = new System.Diagnostics.Process();    process.StartInfo = startInfo; 　　 process.Start(); 　　 　　 process.WaitForExit();    process.Close();

 2、调用外部程序

private void CallOutProcess(string s文件名)        {            System.Diagnostics.ProcessStartInfo pinfo = new System.Diagnostics.ProcessStartInfo();            pinfo.UseShellExecute = true;            pinfo.FileName = s文件名;            //启动进程            System.Diagnostics.Process p = System.Diagnostics.Process.Start(pinfo);        }