Hi Ben,
I attached a sample project demonstrating how you can modify the default
ControlTemplate of the
RadExpander to use an image in the expander button.
Please keep in mind that once you replace the default elements of the expander button with an image, you will need to go through the
RadExpander VisualStates to modify them accordingly.
Kind regards,
Tina Stancheva
the Telerik team
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