RadDocumentPane events do not register when using LoadLayout

[Jerome]

Hi,

We are currently implementing the Docking control in our application. As a service to the user
we want to save the current layout when the applications exits and load it when the user starts
the application again.

We have a document panel that shows the open documents of the user and a empty
document with an icon in the header that, when a user clicks it, creates a new document
(like Internet Explorer 7 - 8 tab panel). We do this by registering for the SelectionChanged
event of the RadPaneGroup.

The problem is that, when we use the LoadLayout method, the SelectionChanged event doesn't
get registered/fired either using XAML or hooking it up in the codebehind.

Have you got any suggestions? A trimmed version of the code is listed below.

Kind regards,

Jerome

        <radDock:RadDocking x:Name="DockingScreen">

            <radDock:RadDocking.DocumentHost>
                <radDock:RadSplitContainer>
                    <radDock:RadPaneGroup x:Name="DocumentPane" SelectionChanged="DocumentPane_SelectionChanged" >
                        <radDock:RadDocumentPane x:Name="NewTab" CanFloat="False" CanUserClose="False" CanUserPin="False" HeaderTemplate="{StaticResource NewTabStyle}" radDock:RadDocking.SerializationTag="NewTabPanel" />
                    </radDock:RadPaneGroup>
                </radDock:RadSplitContainer>
            </radDock:RadDocking.DocumentHost>

       </radDock:RadDocking x:Name="DockingScreen">

       private void DocumentPane_SelectionChanged ( object sender, RoutedEventArgs e )
        {
            if ( ( ( RadPaneGroup ) sender ).SelectedPane != null )
            {
                if ( ( ( RadPaneGroup ) sender ).SelectedPane.Name == "NewTab" )
                {
                    // Logic to add new document
                }
            }
        }

[Kaloyan]

Hi Jerome,

When working with RadDocking's Save/Load functionality it is important to note that the element without a radDock:RadDocking.SerializationTag will be disposed after saving and loading the layout. In other words, after loading the RadDocking, the RadPaneGroup will not exist any more and thus its DocumentPane_SelectionChanged handler. This way you have to add radDock:RadDocking.SerializationTag to this RadPaneGroup so it can work as you expect.

Let us know if you need any additional information.

Best wishes, 
Kaloyan
the Telerik team

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