/// <summary>        /// 执行CMD语句        /// </summary>        /// <param name="cmd">要执行的CMD命令</param>        public string RunCmd(string cmd)        {            proc.StartInfo.CreateNoWindow = true;            proc.StartInfo.FileName = "cmd.exe";            proc.StartInfo.UseShellExecute = false;            proc.StartInfo.RedirectStandardError = true;            proc.StartInfo.RedirectStandardInput = true;            proc.StartInfo.RedirectStandardOutput = true;            proc.Start();            proc.StandardInput.WriteLine(cmd);            proc.StandardInput.WriteLine("exit");            string outStr = proc.StandardOutput.ReadToEnd();            proc.Close();            return outStr;        }