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Editorial Team
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Asked: 2026-05-12T22:01:22+00:00

If I zoom large enough in xamlpadx (500%) I see while lines around the

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If I zoom large enough in xamlpadx (500%) I see while lines around the inside of the border. In my app this even happens at normal zoom level in some controls.

Why is that and more important, what can I do about it?

This is my XAML code:

<Border Background="#000000" BorderBrush="#000000" BorderThickness="4" CornerRadius="4">    
   <StackPanel>               
   </StackPanel>
</Border>

I removed everything until I was sure that no padding/margin/border is involved in the flawed display.

EDIT 2:
I shouldn’t have accepted the answer so soon. I noticed that in same cases the error is as before, although I used SnapsToDevicePixels and set the interior color of the control to the same color as the border. I hope microsoft will fix this soon!

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1 Answer

  1. Editorial Team

    I have the same behavior and I think that it is an error of the WPF rendering engine.
    You get slightly better results by adding SnapsToDevicePixels="True" to the Border: the white lines remain only in the rounded corners.

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