private List <DataTreeViewForGridViewSP> GetData(int pintPageIndex, int pintPageSize, string pstrSortExpression, string pstrFilterExpression) { OperationResult objOperationResult = new OperationResult(); int ItemId = int.Parse(Request.QueryString["i_ParameterId"].ToString()); List <DataTreeViewForGridViewSP> _objData = _objBL.GetSystemParameterForGridView(ref objOperationResult, ItemId).ToList(); if (objOperationResult.Success != 1) { Alert.ShowInTop("Error en operación:" + System.Environment.NewLine + objOperationResult.ExceptionMessage); } return(_objData); }