Get Exitcodes from WindowsForms Application in command window

Question

Hi,

I'm starting a Windows Forms application from the command promt and I need to get the exit codes that the windows forms application generates. The command promt starts the application and returns immediatly. But the application executes in the background. Is there a way to get the Exit codes?

Kind Regards

Christian.

Answer 1

For details on using the ERRORLEVEL directive, see this article by Rob van der Woude.

Answer 2

The answer is

start /wait [Your Command]

and then

echo %errorlevel%

to extract the return value.

--

And because I like writing batch files... (it's a problem of mine...)

@echo off
echo Waiting for program to exit...
start /wait %*
echo Return code was %errorlevel%

Save it somewhere with a .bat extension. Run it with the command line of the program you want to run as it's arguments. It will run the command u gave it, wait for it to end, and then print the return value.

You could also hardcode the program by replacing the start /wait line with your app, because as the docs (start /?) say:

When executing an application that is a 32-bit GUI application, CMD.EXE does not wait for the application to terminate before returning to the command prompt. This new behavior does NOT occur if executing within a command script.

CMD will wait for a winform if it is called from a script whether or not Command Extensions are enabled.