RadGridView filtered items and MVVM

[Sebastian]

Hi,

I currently searched the forums for information about how to retrieve the collection of filtered data from a RadGridView. I found a solution using the Items property of the GridView to access to currently filtered items (and i do not use paging ;)).

The problem is, that we try to use MVVM whenever possible. So is there a proper solution to access the filtered items without binding the model to the ui (the grid view in special) at this point ? If i try a two-way binding i always get a xaml exception from the Items property.

Kind regards
Sebastian

[Rossen Hristov]

Hello Sebastian,

You can't two-way bind a property which is read-only.

What you can do is bind your grid to an instance of QueryableCollectionView residing in your view model. This instance will at all times represent the current view of data, i.e. what the user sees in RadGridView.

So, instead of binding the grid to your sourceCollection, you will create a QueryanleCollectionView(sourceCollection), expose it as a property on your view model and then bind the grid to this new property. Enumerating this QueryanleCollectionView instance will provide you with all items that are currently in view. 

I hope this helps.

Kind regards,
Ross
the Telerik team