ListBoxItem Content
<Window x:Class="SimpleStyles.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="SimpleStyles" Background="#F8F8F8"> <ScrollViewer> <WrapPanel> <HeaderedItemsControl Header="ListBox"> <StackPanel Orientation="Horizontal"> <ListBox Margin="8" SelectionMode="Extended" Height="100"> <ListBoxItem Content="First Normal Item" /> <ListBoxItem Content="Second Normal Item" /> <ListBoxItem Content="Third Normal Item" /> <ListBoxItem Content="Fourth Normal Item" /> <ListBoxItem Content="Fifth Normal Item" /> <ListBoxItem Content="Sixth Normal Item" /> <ListBoxItem Content="Seventh Normal Item" /> <ListBoxItem Content="Eighth Normal Item" /> </ListBox> <ListBox Margin="8" SelectionMode="Extended" ScrollViewer.VerticalScrollBarVisibility="Visible" Height="100"> <ListBoxItem Content="First Normal Item" /> <ListBoxItem Content="Second Normal Item" /> <ListBoxItem Content="Third Normal Item" /> <ListBoxItem Content="Fourth Normal Item" /> <ListBoxItem Content="Fifth Normal Item" /> <ListBoxItem Content="Sixth Normal Item" /> <ListBoxItem Content="Seventh Normal Item" /> <ListBoxItem Content="Eighth Normal Item" /> </ListBox> </StackPanel> </HeaderedItemsControl> </WrapPanel> </ScrollViewer> </Window>