I am trying to implement the SelectionChanged event on the RadGridView. In that event, I want to collapse every row in the GridView except that one row that happens to be selected. However, I can't seem to figure out how to find the rows themselves to set the IsExpanded property to true or false. The items collection is available, but it only gives me access to the bound collection and not the GridViewRow items. How do I get the rows collection?