silverlight: how to call dataservice from silverlight

This code helps you know how to consume dataservice from silverlight application

public void GetModelsByDataService(string DataServiceURL)

{

try

    {

       context = new ShapeCollection(new Uri(DataServiceURL));

       var models = from m in context.EquipmentModels select m;

       DataServiceQuery<EquipmentModel> equipmentmodelQuery = models as DataServiceQuery<EquipmentModel>;

       equipmentmodelQuery.BeginExecute(new AsyncCallback(OnGetModelsComplete), equipmentmodelQuery);

    }

    catch (Exception ex)

    {

       throw ex;

    }

}

void OnGetModelsComplete(IAsyncResult result)

{

    DataServiceQuery<EquipmentModel> equipmentmodelQuery =result.AsyncState as DataServiceQuery<EquipmentModel>;

    try

    {

       List<EquipmentModel> lstOfEquipmentModels = equipmentmodelQuery.EndExecute(result).ToList();

       var mds = from equipmentAttribute in lstOfEquipmentModels

                select equipmentAttribute.Name;

       List<string> modelsList = mds.ToList<string>();

       modelsList.Sort();

       if (GetEquipmentModelsDataServiceCompleted != null)

       {

           GetEquipmentModelsDataServiceCompleted(modelsList);

       }

    }

    catch (Exception ex)

    {

       if (GetEquipmentModelsDataServiceCompleted != null)

       {

           GetEquipmentModelsDataServiceCompleted(null);

       }

    }

}