public class RowAllowEventArgs : RowEventArgs
Public Class RowAllowEventArgs Inherits RowEventArgs
The GridView.GroupRowExpanding and GridView.GroupRowCollapsing events fire when a group row is about to be expanded or collapsed respectively. They enable you to prohibit changing the row's expanded state. The RowAllowEventArgs class introduces the RowAllowEventArgs.Allow property for this purpose. The inherited RowEventArgs.RowHandle property allows you to identify the row whose expanded state is about to be changed.