Hello,

I am using a sample I found from your documentation to make use of virtalCollection. I have filtering and sorting working but grouping has proven a bit difficult.

http://help.infragistics.com/Help/Doc/Silverlight/2012.1/CLR4.0/html/Virtual_Collection_Using_Grouping.html

in my ItemDataRequested event handler 

I have a block that looks like ....

ObservableCollection<GroupDescription> groupDescriptions =
(sender as VirtualCollection<MyData>).GroupDescriptions;
// cycle through the group descriptions
foreach (GroupDescription gd in groupDescriptions)
{

....

When grouping on the UI the event fires but there is nothing in the GroupDescriptions. Also the CanGroup flag of the VC is false.

Any insight or a pointer to a sample would much be appreciated.