Get the filtered collection from a QueryableCollectionView

[Giuseppe Marchi MVP]

Hi all.
I'm using the QueryableCollectionView to filter mu RadChart. With this class i'm able to retrieve the original collection of data (using the SourceCollection property). But, how i can retrieve the filtered collection of data?
Thanks in advance

[Rossen Hristov]

Hi Giuseppe,

Since the QueryableCollectionView collection is the actual view as it name implies, it is the de facto filtered collection.

So for example, if you add a FilterDescriptor to filter the QueryableCollectionView collection, if you enumerate it it will contained only the items that pass the filter. That is why its name ends in *View.

I hope this makes sense.

Best wishes,
Ross
the Telerik team

[Sudhir]

No it doesn't make sense. Can you point to an example where I can use Filter property of QueryableCollectionView?

[Dimitrina]

Hi, 

I am afraid setting Filter property for QueryableCollectionView is not currently supported. You should use the FilterDescriptors collection instead. 

For example you can add a FilterDescriptor like so:

queryableView.FilterDescriptors.Add(new FilterDescriptor("Country", FilterOperator.IsEqualTo, "England"));

I hope this helps.

Regards,
Didie
Telerik

[George]

You can use Cast extensions to get the filtered result:

QueryableCollectionView.Cast<T>()