Execute cmd command on windows server with web app [duplicate]

Question

I have a web app c # hosted on IIS on a computer with windows server 2008, I ran a command on a windows server cmd through C#, but it doesn't work, I tried it locally on my computer and the command works, I don't know why it doesn't work on the computer with windows server, I use this source code,I put a log but doesn't throw any error.

        protected void btnReboot_Click(object sender, EventArgs e)
        {
            try
            {

                //StartShutDown("-l");
                StartShutDown("-f -r -t 5");

                Log2("MNS OK");
            }
            catch (Exception ex)
            {
                Log2("MNS ERROR  " + ex.ToString());
            }

        }
        private static void StartShutDown(string param)
        {
            ProcessStartInfo proc = new ProcessStartInfo();
            proc.FileName = "cmd";
            proc.WindowStyle = ProcessWindowStyle.Hidden;
            proc.Arguments = "/C shutdown " + param;
            Process.Start(proc);
        }

Change /C in /K and comment out the line proc.WindowStyle Now you should be able to see the console windows opened by the command and you can look if there is an error message — Steve
– Steve, Commented Jan 13, 2020 at 22:57
And are you able to log on your server and try to open a command window using same account used to launch the Process? — Steve
– Steve, Commented Jan 13, 2020 at 23:27
@Steve on the server if it is possible to open the command window manually and I comment out the line proc.WindowStyle — Ivxn
– Ivxn, Commented Jan 13, 2020 at 23:41

Kyle Goode · Accepted Answer · 2020-01-13 23:21:19Z

1

You can actually capture the error output from the process that was launched by redirecting the standard error. An example would be like this:

private static void StartShutDown(string param)
{
    Process p = new Process();
    p.StartInfo.RedirectStandardOutput = true;
    p.StartInfo.RedirectStandardError = true; // You need to set this
    p.StartInfo.UseShellExecute = false; 

    p.StartInfo.FileName = "cmd.exe";
    p.StartInfo.Arguments = "/C shutdown " + param;
    p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    p.Start();

    string stdoutx = p.StandardOutput.ReadToEnd();         
    string stderrx = p.StandardError.ReadToEnd(); // here is where you get the error output string        
    p.WaitForExit();

    Console.WriteLine("Exit code : {0}", p.ExitCode);
    Console.WriteLine("Stdout : {0}", stdoutx);
    Console.WriteLine("Stderr : {0}", stderrx);
}

Once you have the Stderr you can check its contents and, if it's not empty then you know an error occurred.

answered Jan 13, 2020 at 23:21

Kyle Goode

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1 Comment

Ivxn Over a year ago

On the Stderr line it shows me access denied

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