ArcMap hangs on shutdown when debugging a .NET add-in

[JonathanBailey]

I'm developing an ArcMap add-in using .NET and Visual Studio 2012. I've set the debugging option for the project to start ArcMap. Ordinarily, when I shut down ArcMap, I'm returned to Visual Studio and debugging stops.

EXCEPT when I open this one particular document in ArcMap. Then, I'm returned to Visual Studio, but the debugging process doesn't stop. The ArcMap process is still running and consuming about 50% CPU (on a 4 core machine).

If I run ArcMap by itself with the compiled add-in, ArcMap shuts down normally.

It almost seems like I'm hanging on to an unmanaged resource somewhere, but I created another map document that has content that causes the same objects to be created, and ArcMap shuts down normally and returns me to Visual Studio when I open this document.

I've also found that, when this occurs, the Dispose() method is not called on my add-in button.

Any idea why this is happening?

[JonathanBailey]

Sol Wuensch‌,

I commented out the code so that it does literally nothing:

using ESRI.ArcGIS.Carto;

using ESRI.ArcGIS.Display;

namespace SpatialBridge.Addresses.ArcMapAddIn

{

    public sealed class FishboneCommand : ESRI.ArcGIS.Desktop.AddIns.Button

    {

        public FishboneCommand()

        {

        }

        protected override void OnClick()

        {

        }

        protected override void OnUpdate()

        {

        }

        private void Events_ActiveViewChanged()

        {

        }

        private void OnActiveViewEventsAfterDraw(IDisplay display, esriViewDrawPhase drawPhase)

        {

        }

    }

}

And the behaviour persists. Also, code analysis didn't find anything.

Thanks,

Jon.

[RollinNelson1]

Jonathon:

The only thing I would suggest is to use ReleaseComObject(if applicable).

In my case I created a geoprocessor in my .NET code. Then, my code kept hanging at "shutdown" after it ran successfully. Once I made the change, the execution was smooth and no hang-ups.

//Create geoprocessor

IGeoProcessor2 arankaGP = new GeoProcessorClass();

.

.

.

Marshal.ReleaseComObject(arankaGP);

[OwenEarley]

This is often the cause of these kind of problems. However, it seems odd that the problem persists with the ESRI.ArcGIS.Desktop.AddIns.Button boilerplate code and no user code.

[JonathanBailey · Accepted solution]

Agreed. This lead me to investigate whether the map document itself was a problem, since it didn't seem to happen with other map documents. I ran the map document through the MXD Doctor, and, problem solved.