DataService<T> Class

The main entry point for developing an Open Data Protocol (OData) data service by using WCF Data Services.


Namespace:  System.Data.Services
Assembly:  Microsoft.Data.Services (in Microsoft.Data.Services.dll)

[AspNetCompatibilityRequirementsAttribute(RequirementsMode = AspNetCompatibilityRequirementsMode::Allowed)]
[ServiceBehaviorAttribute(InstanceContextMode = InstanceContextMode::PerCall)]
generic<typename T>
public ref class DataService : IRequestHandler

Type Parameters


Type that defines the data service.

The DataService<T> type exposes the following members.

Public methodDataService<T>Creates a new data service that deploys data of the type indicated by the template class.

Protected propertyCurrentDataSourceGets the data source instance currently being used to process the request.
Public propertyProcessingPipelineGets an object that defines the events for the data service processing pipeline.

Public methodAttachHostAttaches the data service host to the data service identified by the parameter host.
Protected methodCreateDataSourceCreates a data source of the template class that will be used by the data service.
Public methodEquals (Inherited from Object.)
Protected methodFinalize (Inherited from Object.)
Public methodGetHashCode (Inherited from Object.)
Public methodGetType (Inherited from Object.)
Protected methodHandleExceptionCalled when an exception is raised while processing a request.
Protected methodMemberwiseClone (Inherited from Object.)
Protected methodOnStartProcessingRequestCalled before processing each request. For batch requests, it is called one time for the top batch request and one time for each operation in the batch.
Public methodProcessRequestProcesses an HTTP request.
Public methodProcessRequestForMessageProcesses an HTTP request.
Public methodToString (Inherited from Object.)

The DataService<T> class does the basic integration of all components of the server system. A new data service that uses system defaults for authorization and caching is created by defining a class that derives from the DataService<T> class and by referencing a compatible data model.

The type of the DataService<T> must expose at least one property that returns an entity set that is an IQueryable<T> collection of entity types. This class must also implement the IUpdatable interface to enable updates to be made to entity resources.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.