Save RadDocking Layout When the Control is Unloaded

Updated on Sep 24, 2025

Environment

Product Version	2022.3 912
Product	RadDocking for WPF

Description

How to save the layout of the RadDocking control when its unloaded.

Solution

1. Add a new event handler for the Unloaded event of the RadDocking using the EventManager.RegisterClassHandler static method.

   Add a new event handler for the Unloaded event of RadDocking

   C#

       EventManager.RegisterClassHandler(typeof(RadDocking), RadDocking.   UnloadedEvent, new RoutedEventHandler(OnUnloaded));

   VB.NET

       EventManager.RegisterClassHandler(GetType(RadDocking), RadDocking.  UnloadedEvent, New RoutedEventHandler(OnUnloaded))

2. Implement the save logic in the newly added event handler for the Unloaded event.

   Sample implementation of saving the layout in the newly added handler

   C#

       private void OnUnloaded(object sender, RoutedEventArgs e)
       {
           using (IsolatedStorageFile storage = IsolatedStorageFile.   GetUserStoreForAssembly())
           {
               using (var isoStream = storage.OpenFile("RadDocking_Layout.xml",    FileMode.Create))
               {
                   this.radDocking.SaveLayout(isoStream);
               }
           }
       }

   VB.NET

       Private Sub OnUnloaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
           Using storage As IsolatedStorageFile = IsolatedStorageFile. GetUserStoreForAssembly()
               Using isoStream = storage.OpenFile("RadDocking_Layout.xml",     FileMode.Create)
                   Me.radDocking.SaveLayout(isoStream)
               End Using
           End Using
       End Sub