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Asked: 2026-06-15T04:01:58+00:00

I’m following Bea Stollnitz’s blog post on implementing drag and drop on an data

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I’m following Bea Stollnitz’s blog post on implementing drag and drop on an data bound ItemsControl. It works very nicely, but I have a question for anyone who’s experienced something similar…

When I begin dragging the item, there is a small, dashed rectangle at the bottom of the mouse. I cannot figure out at all how to hide that rectangle. Does anyone know how to get rid of this? I would add a screenshot, but when I do a Print Screen, the rectangle doesn’t appear.

I think it has something to do with a focus setting on the AdornerLayer that the “DraggedAdorner” is added to.

Thanks!

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1 Answer

  1. Editorial Team

    Try this in the Style of the Visual that is surrounded by the rectangle:

    <Setter Property="FocusVisualStyle" Value="{x:Null}"/>

    EDIT: The effect that you are seeing is a result of the DragDropEffects.Move assignment. You can mitigate this visual by simply changing the following line (Line #168 in the sample):

    DragDropEffects effects = DragDrop.DoDragDrop((DependencyObject)sender, data, DragDropEffects.Move);

    To this:

    DragDropEffects effects = DragDrop.DoDragDrop((DependencyObject)sender, data, DragDropEffects.None);

    Thus setting the DragDropEffect to DragDropEffects.None

    NOTE: In the sample, it evaluates the DragDropEffects value in the process of performing the drag & drop, so you would need to work around this (Probably a simple AttachedProperty, or even casting the Sender as a FrameworkElement and using the Tag property), but this should resolve the visual issue.

    I hope this helps, and if I can help you further feel free to let me know. Good luck!

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