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Appearance
When you click on the DropDownButton, the custom content will pop up.
DropDownButton
<DropDownButton Content="Click To Open"> <DropDownButton.Flyout> <Flyout> <!-- Content --> </Flyout> </DropDownButton.Flyout> </DropDownButton>
Demo: SukiUI.Demo/Features/ControlsLibrary/MiscView.axaml