Disappearing Items

[Przemysław]

Hi,

 We're building MVVM/Caliburn based application. We are placing Views inside content control, alowing user to navigate to other child VM, and going back to parent.

The problem is that when we use TreeListView - it works correctly untill we won't go back to parent VM - which causes a view to be attached in place of other one. TLV Items are not rendered - control stays empty (border is there, column headers also). Silly thing is if I replace TLV with other control - event listbox it works - I can see all items bound to VM.

Only TLV is ignoring reattaching to view - all other controls are shown properly. Also VM's property is being accessed and returns proper list of items - so binding is probably working, but still items are not displayed.

 

Whan could cause such behaviour?

 

[Dimitrina]

Hi,

I am sorry to hear you experience such a problem. You say it works fine with other control (for example LIstBox), have you also tried with RadGridView or MS DataGrid? Do you use the latest version of UI for WPF?
If so, this would be not be the expected behavior and we are currently not aware of any such issues.
Would it be possible for you to isolate the exact case in a demo project illustrating it and send it to us via a new support thread? You can take a look at this blog post for a reference on how to isolate an issue. That way I will debug it in details and advise further. 

Regards,
Dimitrina
Telerik