How to make WPF TabItem Headers' Background transparent?
问题 I have a TabControl with a few TabItems. Each TabItem has a Grid with a TextBlock and one Image, which has transparent areas, in it. My goal is to have the Text and the Image completely visible and see the Window.Background Image through the transparent areas. Problem: No matter what I tried, there is a white background behind the Image and TextBlock I have set. I tried to set the TabControl Opacity to 0, but that makes the whole thing dissapear, as expected. Same result with the TabItem