System.Web.UI.WebControls.FormView.OnModeChanging C# (CSharp) Method

		protected virtual void OnModeChanging (FormViewModeEventArgs e)
		{
			if (Events != null) {
				FormViewModeEventHandler eh = (FormViewModeEventHandler) Events [ModeChangingEvent];
				if (eh != null) {
					eh (this, e);
					return;
				}
			}
			if (!IsBoundUsingDataSourceID)
				throw new HttpException (String.Format (unhandledEventExceptionMessage, ID, "ModeChanging"));
		}