RadGridView does not process filtering, sorting, and grouping in Virtual Mode
. Only the UI and expression collections are updated.
You can use FilterChanged, SortChanged, and GroupByChanged events to implement you logic for virtual mode. The events notify for a change in the related expression collections and send updates to RadGridView UI to fire CellValueNeeded
event to fill again the displayed cells in the current grid view.
In the future editions of RadGridView, we have planned to implement virtual grouping operations with a simpler and more useful API.
the Telerik team