Why use QueryableCollectionView?

[Alex]

There must be somewhere on this site that has this explanation but I just can't seem to find it. I hope someone can point me to the right direction.

What is the advantages of using QueryableCollectionView vs say, ObservableCollection?

[Vlad]

Hello,

 With our QueryableCollectionView you have built-in support for filtering, grouping, sorting, aggregates and many more not supported in plain ObservableCollection. Furthermore the collection is ICollectionView (currency support), IEditableCollectionView (edit/update/cancel), IPagedCollectionView (paging) and the biggest advantage - IQueryable. If you provide IQueryable for QueryableCollectionView  all operations will be executed directly on your data-base server using the query provider. Of course in Silverlight this is not verry common case (you have very few options for real IQueryable) however in WPF this can be very convenient. 

Greetings,
Vlad
the Telerik team

[Todd]

The QueryableCollectionView constructor only takes an IEnumerable source parameter so how would it be used with  an IQueryable source? 
Can you provide an example of this?

Thanks,
Todd

[Vlad]

Hi,

Actually IQueryable is IEnumerable;
http://msdn.microsoft.com/en-us/library/system.linq.iqueryable.aspx 

I suggest you to check your local copy of our WPF demos for more info. 

Regards,
Vlad
the Telerik team