Console application hangs when called from Process.Start

[chad]

Hi,

I am using Process.Start() to call a console application from ASP.NET
page. When the code is executed, the Console application is opened.
When it is done, it should have been terminated but it is not. I have
placed WaitForExit(20000) to limit the execution time to 20 seconds and
if it does not terminate then it will be forced close. The question is
why wouldn't the application exit by itself when it is done as it
should be (it was idle). Please see the code below.

System.Diagnostics.ProcessStartInfo processInfo = new
System.Diagnostics.ProcessStartInfo(path, parameters);
processInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
processInfo.RedirectStandardOutput = true;
processInfo.UseShellExecute = false;
processInfo.CreateNoWindow = true;

System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo = processInfo;
process.Start();
process.WaitForExit(20000);
process.Kill();


Thanks!!

 

[wfairl]

You're redirecting the output so you're going to have to read from the
output stream or the process will hang once it fills (I don't remember
offhand how many bytes it can buffer). If you're doing this in .net 1
you're going to have to poll the stream from another thread, in 2.0 you
can use BeginOutputReadLine instead.