We do not offer rad dropdown button but we do have a couple of controls that can be used instead.
On one hand you can use a RadDropDownList, which you can find demoed here:
On the other hand you may find useful the RadComboBox, which has more functionality
. And this article shows how to configure the right-to-left support of the control - RTL Support
Alternatively, you may use the SplitButton functionality of the RadButton:
They can be used with different skins or further styled to approximate the look in the screenshot.
Let us know if you have further questions.
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