C#中执行dos命令，返回结果值

public string Execute(string dosCommand, int milliseconds)
        {
            string output = "";     //输出字符串
            if (dosCommand != null && dosCommand != "")
            {
                Process process = new Process();     //创建进程对象
                ProcessStartInfo startInfo = new ProcessStartInfo();
                startInfo.FileName = "cmd.exe";      //设定需要执行的命令
                startInfo.Arguments = "/C " + dosCommand;   //设定参数，其中的“/C”表示执行完命令后马上退出
                startInfo.UseShellExecute = false;     //不使用系统外壳程序启动
                startInfo.RedirectStandardInput = false;   //不重定向输入
                startInfo.RedirectStandardOutput = true;   //重定向输出
                startInfo.CreateNoWindow = true;     //不创建窗口
                process.StartInfo = startInfo;
                try
                {
                    if (process.Start())       //开始进程
                    {
                        if (milliseconds == 0)
                            process.WaitForExit();     //这里无限等待进程结束
                        else
                            process.WaitForExit(milliseconds);  //这里等待进程结束，等待时间为指定的毫秒
                        output = process.StandardOutput.ReadToEnd();//读取进程的输出
                    }
                }
                catch
                {
                }
                finally
                {
                    if (process != null)
                        process.Close();
                }
            }
            return output;
        }