or
<telerik:RadDocking Grid.Row="1" Grid.ColumnSpan="2" BorderThickness="0" Padding="0" IsEnabled="{Binding Path=IsWebLoading, Converter={StaticResource ibcConverter}}" PreviewClose="RadDocking_PreviewClose"> <telerik:RadSplitContainer InitialPosition="DockedLeft"> <telerik:RadPaneGroup> <telerik:RadPane Header="Menu" telerik:RadDocking.SerializationTag="PaneLeft"> <views:BrowsePanelView Margin="0" VerticalAlignment="Stretch" x:Name="browsePanelView" DataContext="{Binding Path=BrowsePaneVM}"/> </telerik:RadPane> </telerik:RadPaneGroup> </telerik:RadSplitContainer> <telerik:RadDocking.DocumentHost> <telerik:RadSplitContainer> <telerik:RadPaneGroup modules:PaneGroupExtensions.ItemsSource="{Binding Path=DocPanelTabCollection}" SelectionChanged="RadPaneGroup_SelectionChanged"> </telerik:RadPaneGroup> </telerik:RadSplitContainer> </telerik:RadDocking.DocumentHost> </telerik:RadDocking>As per message subject, does radPropertyGrid support RegularExpressionAttribute for validation? I can't find a mention in documentation.