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ParentWindow is null #30
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Thanks for the hint! This hook was inserted so that the following issue could be solved: #16 The UserControl is currently disposed of via the _ParentWindow.Closed EventHandler. That would no longer be the case and we would have a memory leak. If you have a solution for me to solve your problem, I am happy to implement it! |
I think you had this check before, but removed it for some reason. May I suggest this simple change: |
..and when should |
The Unloaded event will still be called. And even though the _ParentWindow below is null it will not throw an exception (which is surprising to me).
So, Dispose is called in _OnUnloaded. I don't see any down side in checking if the _ParentWindow is null, because if it is the WindowClosed event will never be called anyway... |
Since the method is called recursive, no exception should be thrown here. See: https://github.com/dojo90/NLogViewer/blob/master/src/NLogViewer/Extensions/DependencyObjectExtensions.cs#L20
This logic is needed if you use the Could you please try the following commit whether it solves your problem? 92fb12b |
Ah now I think I get it! 🤦♂️😂 |
yes, that works. Thanks a lot! |
can you please check if the Parentwindow is null ?
If I add the UserControl as an ElementHost child (e.g. in my Outlook Addin) then it'll throw me an exception, because it is not loaded in a Window...
here:
if (_ParentWindow.FindChildByUid(Uid) == null)
and here:
_ParentWindow.Closed += _ParentWindowOnClosed;
Thanks
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