public DataSet GetProductVendorsDataSet(string whereExpression, string orderByExpression) { ProductVendorData data = new ProductVendorData(); DataSet ds = new DataSet(); try { ds = data.GetProductVendorDynamicDataSet(whereExpression, orderByExpression); } catch (Exception ex) { log.Write(ex.Message, "GetProductVendorsDataSet"); throw (ex); } finally { data = null; } return(ds); }