I\'ve found this topic about setting the border of a button to transparent. This works fine, but I want to use this for the button background and not the border.
Soluti
Found the solution for my issue:
Apparently you have to add the triggers within the ControlTemplate under ControlTemplate.Trigger. Andd after you've done that the thing with borders is that you have to set a TargetName in the Border tag and then set the reference (-> TargetName="XXXXX") to the properties which you've named in the border tag.
So: