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POC#: can't ReadKey if my parent is a window application and it is redirecting my stdout
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copied!<p>I am trying to catch the output from a child console app. </p> <ul> <li>When the parent is a console app everything works.</li> <li>When the parent is a windows app then the child fails to run with an exception from <code>Console.ReadKey()</code> saying there is no way to readKey when the stdInput has been redirected. However, I am not redirecting the input (only the output).</li> </ul> <p>What am I missing here?</p> <p>Child Code (set project to console app):</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ChildProcess { internal class Program { private static void Main(string[] args) { char key = Console.ReadKey().KeyChar; Console.Out.WriteLine("stdout"); Console.Error.WriteLine("stderr"); } } } </code></pre> <p>Parent app code: (set project to windows app)</p> <pre><code>using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading.Tasks; namespace RedirectProcessOutput { internal class Program { private static void Main(string[] args) { string fileName = @"ChildPRocess.exe"; string arg = "i"; string processOutput = "?"; Process p = new Process(); p.StartInfo.UseShellExecute = false; p.StartInfo.CreateNoWindow = false; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = false; p.StartInfo.FileName = fileName; p.StartInfo.Arguments = arg; p.Start(); processOutput = p.StandardOutput.ReadToEnd(); p.WaitForExit(); Console.WriteLine("The child process output is:" + processOutput); } } } </code></pre> <p>I was expecting the application to run without crashing even when the parent is a window app since the child should have its own console and I am not redirecting the input for that. BTW - everything works when:</p> <ul> <li>the child is not doing a "ReadKey" or</li> <li>the parent is not redirecting stdout at all </li> </ul>

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