Docking.LoadLayout clear collection of QueryableCollectionView.FilterDescriptions

[Anton]

We have a WPF MVVM application.. use QueryableCollectionView for filtering items from two collections.

QCV created in VM... and also added FilterDescription to it.

RadGridView used QCV as ItemsSource.

View with RadGridView also used RadDocking and in Loaded handler there restore DockingLayout via call Docking.LoadLayout(fileStream)

We found that this operation affect on clear FilterDescriptions from QCV.

How it possible to avoid it?

[Martin Ivanov]

Hello Anton,

To avoid this, you can explicitly set the DataContext of the pane that holds the RadGridView control. You can do this in code:

this.pane.DataContext = theDataContextHoldingTheQCV;

Or in Xaml:

<telerik:RadPane DataContext="{Binding theDataContextHoldingTheQCV}">

I hope that helps.

Regards,
Martin Ivanov
Progress Telerik

[Andrey]

Hi Martin,

I've encountered with similar issue. I have RadGridView inside RadPane. Also I have regions navigation using Prism. When I switch back to the region that contains the Grid I see that all of the filters are deleted, 'scroller' moves to the beginning of the list (even if filtering wasn't set), but items from underlaying source collection (old observableCollection) are shown. Filters are set in UI, not in VM.

Previously I used to bind ObservableCollection to Grid and everything was ok (position of slider in grid was correct, filters were kept etc). But currently I use QCV and it seems that everything restores to default view. 

I've tried your suggested workaround, but after it even items are not shown in the Grid. Any other ideas how to solve this? 

 

BR,

Andrew

[Martin Ivanov]

Hello Andrew,

I am afraid that without some sample code showing the setup I cannot tell what happens. What I can suggest you is to post few runnable code snippets here or open a new support ticket and send a project showing the issue. 

Regards,
Martin Ivanov
Progress Telerik