SelectionChanged has unexpected content (Selector)

Docking/MDI for WPF Forum

Posted 15 years ago by Martin de Jong - Statistics Netherlands
Version: 4.5.0483
After adding an eventhandler to a tabbedMdiHost

<docking:TabbedMdiHost x:Name="tabbedMdiHost" Selector.SelectionChanged="tabbedMdiHost_SelectionChanged">    
in your demo "Tabbed MDI-Only QuickStart" i noticed a strange content of the arguments variable 'e'. After i delete and successive add a document, variable 'e.RemovedItems' still contains the last deletion. Is this meant to be that way?


Comments (1)

Posted 15 years ago by Actipro Software Support - Cleveland, OH, USA
Hi Martin,

The SelectionChanged event appears to be working as designed. The RemovedItems contain the items that are no longer selected, not items that were actually removed (a.k.a. closed). If you add the following code to your event handler, you should see that the RemovedItems always contains the document that was previously selected.
if (null != e.RemovedItems) {
    foreach (object obj in e.RemovedItems)
        System.Diagnostics.Debug.WriteLine(string.Format("****REMOVED: {0}", obj));
if (null != e.AddedItems) {
    foreach (object obj in e.AddedItems)
        System.Diagnostics.Debug.WriteLine(string.Format("****ADDED: {0}", obj));
If you are seeing something different, please let us know.

Actipro Software Support

The latest build of this product (v24.1.2) was released 2 months ago, which was after the last post in this thread.

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