Finding all view models of group

[David]

I am using the MVVM design pattern and am attempting to add a button to perform an action on all items in a group. I have successfully added the button to the group header template and am attempting to find the view models of the group's rows with the following code:

private void validateGroupButton_Click(object sender, RoutedEventArgs e)

        {

            var sourceUIElement = (UIElement)sender;

            var group = sourceUIElement.ParentOfType<GridViewGroupRow>();

            var collectionViewGroup = (CollectionViewGroup)group.DataContext;

            var grid = sourceUIElement.ParentOfType<RadGridView>();

            var vm = (ManualDealsViewModel)grid.DataContext;

            var toValidate = collectionViewGroup.Items.Cast<ManualDealViewModel>().ToList();
              (.... perform action on toValidate enumeration ...)
            }

This basically works, however the toValidate enumeration only contains the rows that are currently visible in the group. 

Is there a way to retrieve all the view models that match the group, even if they are not presently visible?

[Milan]

Hi David,

you should be able to get all items using collectionViewGroup.Items. I have prepared a sample application which demonstrates that all items can be retrieved using this property. I hope I have understood your question correctly.

Regards,
Milan
the Telerik team

[David]

Thanks, that's done the job.