Hi,

I am using TabGroupPaneRegionAdapter from https://compositewpfcontrib.svn.codeplex.com/svn/Trunk/src/Extensions.Infragistics/Composite.Wpf.Infragistics/CompositeWPFContrib.Composite.Wpf.Infragistics/XamDockManager/Regions/TabGroupPaneRegionAdapter.cs.

The problem I am getting with this is contentpane's Closed event executes two times which is probably due to line 'contentPane.ExecuteCommand(ContentPaneCommands.Close);' Which means when cross button was pressed and closed event was invoked first time it was still there in xamDockManager hence line "contentPane.ExecuteCommand(ContentPaneCommands.Close);" executes and invokes closed event again. Any ideas how to solve this.

Here is part of code from adapter:

private void OnViewsCollectionChanged(object sender, NotifyCollectionChangedEventArgs e, IRegion region, TabGroupPane regionTarget)
        {
            if (e.Action == NotifyCollectionChangedAction.Add)
            {
                //Add content panes for each associated view. 
                foreach (object item in e.NewItems)
                {
                    UIElement view = item as UIElement;

                    if (view != null)
                    {
                        ContentPane newContentPane = new ContentPane();
                        newContentPane.Content = item;
                        //if associated view has metadata then apply it.
                        if (view.GetTabGroupPaneMetadata() != null)
                        {
                            newContentPane.Header = (view.GetTabGroupPaneMetadata()).Header;
                        }
                        //When contentPane is closed remove the associated region 
                        newContentPane.Closed += delegate(object contentPaneSender, PaneClosedEventArgs args)
                        {
                            OnContentPaneClosed((ContentPane)contentPaneSender, args, region);
                        };


                        regionTarget.Items.Add(newContentPane);
                    }
                }
            }
            else
            {
                if (e.Action == NotifyCollectionChangedAction.Remove)
                {
                    //Associated View has been removed => remove the associated ContentPane from XamDockManager
                    XamDockManager xamDockManager = regionTarget.FindDockManager();
                    IEnumerable<ContentPane> contentPanes = xamDockManager.GetPanes(PaneNavigationOrder.VisibleOrder);

                    foreach (ContentPane contentPane in contentPanes)
                    {
                        if (e.OldItems.Contains(contentPane.Content))
                        {
                            contentPane.Content = null;
                            contentPane.CloseAction = PaneCloseAction.RemovePane;
                            contentPane.ExecuteCommand(ContentPaneCommands.Close);
                        }
                    }


                }
            }
        }

        private void OnContentPaneClosed(ContentPane contentPane, PaneClosedEventArgs args, IRegion region)
        {
            object view = contentPane.Content;
            if (region.Views.Contains(view))
            {
                region.Remove(view);
            }
        }

Any help will be much appreciated thanks.
Imad.