You can directly specify the style, it is relatively simple, define the Button's MouseEnter and MouseLeave events in the style, if all the buttons are like this, directly defined as a style can be, if there is a difference, you can specify the style's x:key, and then the buttons that you want to apply this style to point to it can be:

<. ! -- the first, apply to all buttons -- >

<Style TargetType="{x:Type Button}"> the style and trigger you want to define </Style>

<! -- the second one, define an x:key -->

<Style x:key="CustomButton" Target="{x:Type Button}"> the style and trigger you want to define</Style>

Applying the second one on the button, the code looks like this :

<Button Style="{StaticResource CustomButton}">

The above is the practice of defining directly in the xaml, you can also call in the background code, I hope it will help you, if you have any questions, please follow up or Hi