private List <NodeList> GetData(int pintPageIndex, int pintPageSize, string pstrSortExpression, string pstrFilterExpression) { OperationResult objOperationResult = new OperationResult(); List <NodeList> objData = _objNodeBL.GetNodePagedAndFiltered(ref objOperationResult, pintPageIndex, pintPageSize, pstrSortExpression, pstrFilterExpression); if (objOperationResult.Success != 1) { Alert.ShowInTop("Error en operación:" + System.Environment.NewLine + objOperationResult.ExceptionMessage); } return(objData); }