or


1.<ClientSettings>2. <DataBinding Location="GridAdoNetDataService.svc" SelectCountMethod="GetCount">3. <DataService TableName="ReadOnlyProducts" />4. </DataBinding>5.</ClientSettings>01.public class GridAdoNetDataService : DataService<NorthwindEntities>02.{ 03. public static void InitializeService(IDataServiceConfiguration config)04. { 05. config.SetEntitySetAccessRule("*", EntitySetRights.AllRead);06. config.SetServiceOperationAccessRule("*", ServiceOperationRights.All);07. }08. 09. [WebGet]10. public int GetCount(string where)11. {12. return String.IsNullOrEmpty(where) ? CurrentDataSource.ReadOnlyProducts.Count() :13. CurrentDataSource.ReadOnlyProducts.Where(where).Count();14. }15. 16.}