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Editorial Team
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Asked: 2026-05-31T17:59:09+00:00

In a large WPF-project setting padding on buttons does not have any effect what

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In a large WPF-project setting padding on buttons does not have any effect what so ever. No styles, templates, etc are set on the button, but still it won’t use my padding.

<StackPanel>
    <Button Padding="20, 20">Hello</Button>
</StackPanel>

I tried this in a brand new project and it works like a charm. Obviously there is some global style, template somewhere in the project causing this. Either somewhere in the xaml file, or in some resource file. As this project is rather hefty I going through everything is not feasable.

How to I debug this? Can I see what is overriding the padding?

I tried snooping around with Snoop 2.7.0, but it didn’t really tell me much. Any hints on how to proceed with this type of error?

EDIT

I loked at the ValueSource for some properties:

  • Padding=Local
  • ContentTemplate=Default
  • Template=Style
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1 Answer

  1. Editorial Team

    This particular problem was caused by a style defined in a resource included in the App.xaml.

    The important lesson here is that styles without the x:Key attribute will affect all elements of the target type as described here.

    Performing a solution wide wild card search on <Style*TargetType="*Button yielded a list of potential styles that would affect my button. I found one without the x:Key attribute, commented it out just to try and voila! The padding works.

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