I am using Expander control with ExpandDirection is Right. and use usercontrol as Header.
the problem is the Expand Button sits the center. i have to HorizontalAlignment to right.
In order to set the Expander Button position you have to make changes in its style. You should modify the ControlTemplate "ExpanderHeaderTemplate" and to set the RadExpanderDecorator`s property HorizaontalAlignment to Right .
I prepared a sample project demonstrating this style changes. I hope this is what you need .
Please let me know if you need more info and I would be glad to assist you further.
All the best,
Petar Mladenov
the Telerik team
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