private static string InvokeCmd(string cmdArgs)
{
    string Tstr = "";
    Process p = new Process();
    p.StartInfo.FileName = "cmd.exe";
    p.StartInfo.UseShellExecute = false;
    p.StartInfo.RedirectStandardInput = true;
    p.StartInfo.RedirectStandardOutput = true;
    p.StartInfo.RedirectStandardError = true;
    p.StartInfo.CreateNoWindow = true;
    p.Start();
    p.StandardInput.WriteLine(cmdArgs);
    p.StandardInput.WriteLine("exit");
    Tstr = p.StandardOutput.ReadToEnd();
    p.Close();
    return Tstr;
}