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ArcMap add-in can't find dll

Question asked by bveldkamp on Nov 28, 2018
Latest reply on Nov 28, 2018 by bveldkamp

I am developing an ArcMap add-in containing a Dockable Window. Because I expect this add-in to be moved to ArcGIS Pro at some time, I chose to use WPF instead of Windows Forms. The idea is that I create UserControls that can be hosted in both an ArcMap Dockable Window and an ArcGIS Pro Window. These UserControls will go in a separate class library.


The problem I have now is that this class library cannot be found by the add-in. I checked the .esriAddin file, and the directory %LocalAppData%\ESRI\Desktop10.4\AssemblyCache\{MyAddinGuid} but the dll is there. Using the Process Monitor tool, I found out that the dll is only looked for in C:\Program Files (x86)\ArcGIS\Desktop10.4\bin, and not in the AssemblyCache\{} folder. (When I copy the dll to the Desktop\bin folder, everything works as expected, but I don't want to put it there)


Does anyone know what's going on?


ArcGIS 10.4.1

Visual Studio 2015

.NET Framework 4.5