public static ASPxGridViewCustomButtonCallbackEventArgs FindLastOf(this CallbackRepository <ASPxGridViewCustomButtonCallbackEventArgs> source, string buttonID)
{
return(source.Find(x => x.ButtonID == buttonID).LastOrDefault());
}
public static ASPxGridViewCommandButtonCallbackEventArgs FindLastOf(this CallbackRepository <ASPxGridViewCommandButtonCallbackEventArgs> source, ColumnCommandButtonType buttonType)
{
return(source.Find(x => x.ButtonType == buttonType).LastOrDefault());
}