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Thanks Andrew! I’ll try adding an event in the overridden function like the example shows. It sounds like that should do what I need!

Inthe RubberBandXyModifier, I’ve tried adding an EventTrigger on “MouseUp” to call my ViewModel command function, but it doesn’t seem to trigger at all. Should this be working like this or am I doing something wrong? Thanks!

I’m almost there… I’ve got the custom ZoomModifiers sending an event that the ViewModel handles now. But one more problem. When I double-click for a ZoomExtents, instead it triggers two RubberBand MouseUp events and I never get the ZoomExtents DoubleClick event. Do I need to add something in my custom RubberBand Modifier to prevent this? Thanks!

Didn’t have the ZoomModifier event handler in place, but even with it in place, it still receives a RubberBand MouseUp, the ZoomExtents DoubleClick, and then another RubberBand MouseUp…

I think the more accurate question is: Is there a way for me to know if the base RubberBandXyZoomModifer.OnModifierMouseUp() actually was successful so I know to send my corresponding event? (Since if the mouse only moves a small amount, the rubberband zoom won’t occur…)