topic Re: Debugging IGPFunction in ArcObjects SDK Questions

Debugging IGPFunction

BerendVeldkamp — Fri, 18 Feb 2011 13:52:30 GMT

Hi all,

I developed a custom tool for ArcGIS Desktop (implementing IGPFunction). Now this seems to works fine, the only problem is that I cannot debug the Execute() method. The actual execution works, but a breakpoint that I set inside the method is never hit. The only workaround I found so far is to put System.Diagnostics.Debugger.Break(); inside the Execute method: This will fire up a 2nd instance of Visual Studio, in which I can debug properly.

I was wondering if there's an easier way to do this.

Re: Debugging IGPFunction

StevePiche — Tue, 22 Mar 2011 12:42:22 GMT

Please ensure your geoprocessing is not launched in the background, in a separate thread.

In ArcMap select Geoprocecssing->Geoprocessing Options. In the Background Processing option, disable the checkbox. This should enable you to hit your breakppoints.

Re: Debugging IGPFunction

BerendVeldkamp — Fri, 25 Mar 2011 10:00:50 GMT

That makes perfect sense. Thanks.

Re: Debugging IGPFunction

anthonybaker — Thu, 26 Sep 2013 21:33:31 GMT

This is just what I was looking for but it did not work for me. I am using 10.1 and have created custom geoprocessing tools that depend on a second dll. It would be great to debug this but it is impossible to get a break point to hit.

Any help would be great.

As a second question, the dll actually loads when I call it in the main thread but there is no evidence that it loads in the execution thread. Very strange.

Anthony

Re: Debugging IGPFunction

FreddieGibson — Wed, 30 Oct 2013 16:27:07 GMT

I've found that inserting the following code into your solution will help with debugging custom GPFunctions. This line will prompt you to start a session of Visual Studio and allow you to step through your code.

System.Diagnostics.Debugger.Launch();

I just used this the other week against a custom GP function I built and place the code within its execution method.