Elegantly override style of ComboBox's ToggleButton in WPF

Question

I have a question regarding how to elegantly override an arbitrary element deep inside a control\'s visual tree. I also have attempted to resolve it in a few different ways, bu

Answer 1

A Working Solution

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Hi, this style satisfies your needs, feel free to edit it as you need:

Note the DataTrigger part inside the toggle button style, it hooks to its templated parent's IsKeyboardFocusWithin property istead of IsFocused property, because the last one won't work if you set the ComboBox.IsEditable to True as I did in this style.