Scroll Bar Support in WPF Split Button

The DropDownMenuGroup is shipped with the built-in scrollbar support. It can be made visible by using the ScrollBarVisibility property.

Setting ScrollBarVisibility property to Visible:

<shared:SplitButtonAdv Label="Hello World" x:Name="button" SizeMode="Normal" SmallIcon="employee.png">
<shared:DropDownMenuGroup IsResizable=”True” ScrollBarVisibility=”True”>
<shared:DropDownMenuItem Header="Menu Item 1"/>
<shared:DropDownMenuItem Header="Menu Item 2"/>
<shared:DropDownMenuItem Header="Menu Item 3"/>
</shared:DropDownMenuGroup>
</shared:SplitButtonAdv>