Updated examples

Docking/CustomDockingPanesFactory/Example.xaml

@@ -12,8 +12,10 @@
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="*"/>
         </Grid.RowDefinitions>
-        <TextBlock Text="This example demonstrates how to use a custom DockingPanesFactory in order to add the RadPanes from the PanesSource collection to a predefined empty RadPaneGroups in the control." TextWrapping="Wrap" Width="400" Margin="20" FontWeight="Bold" VerticalAlignment="Center" HorizontalAlignment="Center"/>
-        <telerik:RadDocking PanesSource="{Binding Panes}" Grid.Row="1">
+        <TextBlock Text="This example demonstrates how to use a custom DockingPanesFactory in order to add the RadPanes from the PanesSource collection to a predefined empty RadPaneGroups in the control. The example also demonstrates how to permanently remove a RadPane instance when its 'X' close button is pressed." 
+                   TextWrapping="Wrap" Width="600" Margin="20" FontWeight="Bold" VerticalAlignment="Center" HorizontalAlignment="Center"/>
+        <telerik:RadDocking PanesSource="{Binding Panes}" Grid.Row="1"
+                            Close="OnRadDockingClose">
             <telerik:RadDocking.DockingPanesFactory>
                 <local:MyDockingPanesFactory />
             </telerik:RadDocking.DockingPanesFactory>

Docking/CustomDockingPanesFactory/Example.xaml.cs

@@ -1,16 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
+using System.Windows.Controls;
+using Telerik.Windows.Controls;
 
 namespace CustomDockingPanesFactory
 {
@@ -24,5 +13,26 @@ namespace CustomDockingPanesFactory
             InitializeComponent();
             this.DataContext = new ViewModel();
         }
+
+        private void OnRadDockingClose(object sender, Telerik.Windows.Controls.Docking.StateChangeEventArgs e)
+        {
+            // By default when a RadPane is closed via its 'X' close button it is not fully removed from the control rather its 
+            // IsHidden property is set to True. This is done in order to provide an easy way of reopening such closed instance
+            // without the need of fully creating the a new 'mirrored' instance and adding it to the control.
+
+            // The next code will permanently remove the RadPane instance from the RadDocking control. When PanesSource is set 
+            // the closed RadPane instance needs to be manually removed from the bound collection. This will trigger the RemovePane()
+            // method of the DockingPanesFactory of the control. If no PanesSource is used again a manually remove needs to be 
+            // done by simply calling the RemoveFromParent() method of the RadPane instance.
+            var docking = sender as RadDocking;
+            foreach (var pane in e.Panes)
+            {
+                var dataContext = docking.DataContext as ViewModel;
+                if (dataContext != null)
+                {
+                    dataContext.Panes.Remove(pane);
+                }
+            }
+        }
     }
 }

Docking/CustomDockingPanesFactory/MainWindow.xaml

@@ -2,7 +2,8 @@
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:local="clr-namespace:CustomDockingPanesFactory"
-        Title="MainWindow" Height="350" Width="525">
+        WindowStartupLocation="CenterScreen"
+        Title="MainWindow" Height="700" Width="970">
     <Grid>
         <local:Example/>
     </Grid>

Docking/CustomDockingPanesFactory/MyDockingPanesFactory.cs

@@ -20,5 +20,10 @@ namespace CustomDockingPanesFactory
                 base.AddPane(radDocking, pane);
             }
         }
+
+        protected override void RemovePane(RadPane pane)
+        {
+            base.RemovePane(pane);
+        }
     }
 }

Docking/CustomDockingPanesFactory/Readme.txt

@@ -1,2 +1,2 @@
 #Custom DockingPanesFactory#
-This example demonstrates how to use a custom DockingPanesFactory in order to add the RadPanes from the PanesSource collection to a predefined empty RadPaneGroups in the control.
+This example demonstrates how to use a custom DockingPanesFactory in order to add the RadPanes from the PanesSource collection to a predefined empty RadPaneGroups in the control. The example also demonstrates how to permanently remove a RadPane instance when its 'X' close button is pressed.

Docking/CustomDockingPanesFactory/ViewModel.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Text;
 using Telerik.Windows.Controls;
@@ -8,11 +9,11 @@ namespace CustomDockingPanesFactory
 {
     public class ViewModel : ViewModelBase
     {
-        public List<RadPane> Panes { get; set; }
+        private ObservableCollection<RadPane> panes;
 
         public ViewModel()
         {
-            this.Panes = new List<RadPane>()
+            this.Panes = new ObservableCollection<RadPane>()
             {
                 new RadPane() { Header = "Bottom Pane 1", Tag = "Bottom" },
                 new RadPane() { Header = "Bottom Pane 2", Tag = "Bottom" },
@@ -24,5 +25,25 @@ namespace CustomDockingPanesFactory
                 new RadDocumentPane() { Header = "DocumentHost Pane 5", Tag = "DocumentHost" }
             };
         }
+
+        /// <summary>
+        /// Gets or sets Panes and notifies for changes
+        /// </summary>
+        public ObservableCollection<RadPane> Panes
+        {
+            get
+            {
+                return this.panes;
+            }
+
+            set
+            {
+                if (this.panes != value)
+                {
+                    this.panes = value;
+                    this.OnPropertyChanged(() => this.Panes);
+                }
+            }
+        }
     }
 }

GridView/LightweightComboBoxColumn/MainPage.xaml

@@ -17,7 +17,6 @@
             </ResourceDictionary.MergedDictionaries>
             <Style TargetType="telerik:GridViewRow" BasedOn="{StaticResource GridViewRowCoreValidationStyle}"/>
             <Style TargetType="telerik:GridViewCell" BasedOn="{StaticResource GridViewCellCoreValidationStyle}"/>
-            <Style TargetType="telerik:TreeListViewRow" BasedOn="{StaticResource TreeListViewRowCoreValidationStyle}"/>
         </ResourceDictionary>
         </UserControl.Resources>
     <Grid>

GridView/LightweightComboBoxColumn/MainWindow.xaml

@@ -14,7 +14,6 @@
             </ResourceDictionary.MergedDictionaries>
             <Style TargetType="telerik:GridViewRow" BasedOn="{StaticResource GridViewRowCoreValidationStyle}"/>
             <Style TargetType="telerik:GridViewCell" BasedOn="{StaticResource GridViewCellCoreValidationStyle}"/>
-            <Style TargetType="telerik:TreeListViewRow" BasedOn="{StaticResource TreeListViewRowCoreValidationStyle}"/>
         </ResourceDictionary>
     </Window.Resources>
     <Grid>

GridView/LightweightComboBoxColumn/Readme.txt

@@ -1,8 +1,8 @@
+#Lightweight GridViewComboBoxColumn#
 This example demonstrates how to configure lightweight GridViewComboBoxColumn with validation.
 Validation rules:
 - ItemKey can not be 0
 - CustomerItem can not be empty
-
 See also:
 WPF: http://docs.telerik.com/devtools/wpf/controls/radgridview/columns/columntypes/column-types-combobox-column 
 SL: http://docs.telerik.com/devtools/silverlight/controls/radgridview/columns/columntypes/column-types-combobox-column