调用cmd里的各种命令

public string myCmd(string myCommon) {    Process process=new Process();    process.StartInfo.FileName="cmd.exe";    process.StartInfo.UseShellExecute=false;    process.StartInfo.RedirectStandardInput = true;    process.StartInfo.RedirectStandardOutput = true;    process.StartInfo.RedirectStandardError = true;    process.StartInfo.CreateNoWindow = true;    process.Start();    process.StandardInput.WriteLine(myCommon);    process.StandardInput.WriteLine("exit");    string myResult = process.StandardOutput.ReadToEnd();    process.Close();    return myResult;    }