下面代码内容是关于C# 执行外部命令的代码，应该对大家有用。

 public static int executeCommand(string cmd, int millsecTimeOut) {
    System.Diagnostics.ProcessStartInfo processStartInfo = 
       new System.Diagnostics.ProcessStartInfo("CMD.exe", "/C "+cmd);
    processStartInfo.CreateNoWindow = true;
    processStartInfo.UseShellExecute = false;
    System.Diagnostics.Process process = 
       System.Diagnostics.Process.Start(processStartInfo);
    int exitCode = process.ExitCode;
    process.Close();
    return exitCode;
 }