This documentation is archived and is not being maintained.

DataService<T> Class

The main entry point for developing an ADO.NET Data Service.


Namespace:  System.Data.Services
Assembly:  System.Data.Services (in System.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(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodHandleExceptionCalled when an exception is raised while processing a request.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (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 methodToStringReturns a string that represents the current object. (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.

.NET Framework

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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