Drag & Drop Does Not Initiate from Button/Interactable Controls - Grids for WPF Forum

Posted 3 months ago by Dan Hutt

Version: 24.1.4

Platform: .NET 4.7

Environment: Windows 11 (64-bit)

Hi there. We are having a bit of an issue with the Drag & Drop functionality for a TreeListBox.

If the tree item has a Button or other similar control as the content, Drag & Drop does not work. I suspect this is due to the Button handling the event for clicking and not allowing the event to tunnel or bubble to the TreeItem. I haven't been able to find a workaround, so any help would be very appreciated.

Thanks!

Comments (2)

Answer - Posted 3 months ago by Actipro Software Support - Cleveland, OH, USA

Hi Dan,

Yes, if a child control handles mouse input, then drag and drop for the TreeListBoxItem won't work. You'd have to either make that child control IsHitTestVisible=False or don't have it span the full width of the row so that there is area to grab on for TreeListBoxItem dragging.

Actipro Software Support

Posted 3 months ago by Dan Hutt

Hey there, thanks for confirming. I had a hunch.

The latest build of this product (v25.1.0) was released 2 months ago, which was after the last post in this thread.

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