I need to spawn a child process that is a console application, and capture its output.

I wrote up the following code for a method:

    string retMessage = String.Empty;
    ProcessStartInfo startInfo = new ProcessStartInfo();
    Process p = new Process();

    startInfo.CreateNoWindow = true;
    startInfo.RedirectStandardOutput = true;
    startInfo.RedirectStandardInput = true;

    startInfo.UseShellExecute = false;
    startInfo.Arguments = command;
    startInfo.FileName = exec;

    p.StartInfo = startInfo;
    p.Start();
    
    p.OutputDataReceived += new DataReceivedEventHandler
    (
        delegate(object sender, DataReceivedEventArgs e)
        {
            using (StreamReader output = p.StandardOutput)
            {
                retMessage = output.ReadToEnd();
            }
        }
    );

    p.WaitForExit();

    return retMessage;

However, this does not return anything. I don&#39;t believe the `OutputDataReceived` event is being called back, or the `WaitForExit()` command may be blocking the thread so it will never callback.

Any advice?

**EDIT:** Looks like I was trying too hard with the callback. Doing:

    return p.StandardOutput.ReadToEnd(); 

Appears to work fine.

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How to spawn a process and capture its STDOUT in .NET?