<StackPanel>
        <toolkit:DropDownButton Content="Option">
            <toolkit:DropDownButton.DropDownContent >
                <ListView Margin="2">
                    <ListView.ContextMenu>
                        <ContextMenu>
                            <MenuItem Header="Menuitem1"/>
                            <MenuItem Header="Menuitem2"/>
                        </ContextMenu>
                    </ListView.ContextMenu>
                    <ListViewItem Content="Listview1"/>
                    <ListViewItem Content="Listview2"/>
                </ListView>
            </toolkit:DropDownButton.DropDownContent>
        </toolkit:DropDownButton>
    </StackPanel>