Thanks, Matt.  I could do that, but I don't want to, for 2 reasons.

1.  When you pin and unpin a tab, its position in the tabcollection changes.  I want the tabs to keep their initial position - or is there a way to do that?  It is confusing to a user to have the tabs change positions.

2.  It appears like a kludge to do that, and doesn't look professional.

Does your answer imply that there is no way to intercept a flyin and cancel it?

Thanks for your help...

Hi Matt,

When I run the sample you provided and click on the button, the messagebox is displayed, and then the flyout closes.  This is the behavior I would like to prevent.  The pane autohides, but I cannot find a way to prevent it from auto hiding until I'm done with the popup. 

Question 1:  I do not want to pin the flyout pane as a workaround. If I do, and then unpin it, the tab changes position to the end of the tab collection.  Is there a way to prevent that from happening?  This is a problem in general - the tab should remain in the same position when it is unpinned.

Question 2:  If I wire to the ExecutingCommand event, it is not fired when the flyout pane auto hides, thus I cannot prevent the flyout from closing using commands.  I cannot find another event that fires when the pane auto hides.  Is there a property or event I can use to intercept the flying when I want?

Thanks

HI ,

 I will submit a feature request for the following:

 1)  maintain the position of the pane in the unpinned area when the pane is pinned and unpinned

  2) suppressing the flyin
 

 Sincerely,
 Matt
 Developer Support Engineer

HI,

 Maintaining the postion of the ContentPanes in the unpinned area , when a ContentPane is pinned and unpinned, is not currently supported.

 This request has been submitted as a feature request.

 Sincerely,
 Matt
 Developer Support Engineer

Thank you.  In the meantime, is there a workaround to reposition a tab after the corresponding unpinned tab flyout is unpinned?