or
<Setter Property="ItemsPanel"> <Setter.Value> <ItemsPanelTemplate> <telerik:VirtualizingWrapPanel ItemWidth="195" ItemHeight="88" IsItemsHost="True"/> </ItemsPanelTemplate> </Setter.Value></Setter>
<ListBox ItemsSource="{Binding}" TextSearch.TextPath="Name" Name="lstFiles" HorizontalContentAlignment="Left" Padding="3" Background="{x:Null}" BorderBrush="{x:Null}" SelectionMode="Single" Margin="0,75,0,0" > <ListBox.GroupStyle> <GroupStyle HeaderTemplate="{StaticResource groupTemplate}" /> </ListBox.GroupStyle></ListBox>
<Controls:RadTreeView.ItemContainerStyle>
<Style TargetType="{x:Type Controls:RadTreeViewItem}">
<Setter Property="WorkspaceExplorer:MouseDoubleClickBehavior.MouseDoubleClick" Value="{Binding ActivateItemCommand}" />
<Setter Property="Margin" Value="0"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
<Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
<Setter Property="FontWeight" Value="Normal" />
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="FontWeight" Value="Bold" />
</Trigger>
</Style.Triggers>
</Style>
</Controls:RadTreeView.ItemContainerStyle>