Everything depends on what exactly you need to customize and on which element. Please explain to us in more details the style you need to change.
I made a simple project for you showing how you could change expand arrows on Root RadMenu items
, using Classic Render mode
image and ShowToggleHandle
property is set on the menu.If you need to change the arrows on the sub menu items, the easiest way to do that is to use Lightweight
render mode. Please inspect the project and let me know if this works for you.
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