or
<telerik:RadDocking Grid.Row="1" HasDocumentHost="False" x:Name="radDocking" AllowUnsafeMode="True" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" ClipToBounds="True" Margin="0,0,0,0" PaneStateChange="radDocking_PaneStateChange"> <telerik:RadSplitContainer InitialPosition="DockedTop" Orientation="Horizontal" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" telerik:RadDocking.FloatingSize="26,300" telerik:RadDocking.FloatingLocation="7,200" > <telerik:RadPaneGroup Name="LeftPaneGroup" telerik:ProportionalStackPanel.RelativeSize="20, 500"> <telerik:RadPane PaneHeaderVisibility="Collapsed" Name="LeftPane" prism:RegionManager.RegionName="LeftRegion"> </telerik:RadPane> </telerik:RadPaneGroup> <telerik:RadPaneGroup telerik:ProportionalStackPanel.RelativeSize="80, 500" > <telerik:RadPane Name="ContentPane" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch"> <ContentControl prism:RegionManager.RegionName="ContentRegion"/> </telerik:RadPane> </telerik:RadPaneGroup> </telerik:RadSplitContainer> </telerik:RadDocking>private void radDocking_PaneStateChange(object sender, Telerik.Windows.RadRoutedEventArgs e) { if (e.OriginalSource == LeftPane) { if (LeftPane.IsFloating) { LeftPane.CanUserClose = false; LeftPane.MaxWidth = 26; LeftPane.Width = 26; LeftPane.PaneHeaderVisibility = System.Windows.Visibility.Collapsed; ToolWindow window = LeftPane.ParentOfType<ToolWindow>(); if (window == null) { window = (((LeftPane.Parent as RadPaneGroup).Parent as RadSplitContainer).Parent) as ToolWindow; } window.Width = 26; window.MaxWidth = 26; LeftPaneGroup.Width = 26; LeftPaneGroup.MaxWidth = 26; } } }LocalizationManager.Manager = new TelerikGridViewCustomLocalizationManager();...class TelerikGridViewCustomLocalizationManager : LocalizationManager { public override string GetStringOverride(string key) { return MyLocalization.GetResource(key); } }