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IDataServiceStreamProvider::GetStreamETag Method

Returns the eTag of the media resource that belongs to the specified media link entry.

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

String^ GetStreamETag(
	Object^ entity, 
	DataServiceOperationContext^ operationContext


Type: System::Object
The entity that is a media link entry with a related media resource.
Type: System.Data.Services::DataServiceOperationContext
The DataServiceOperationContext instance used by the data service to process the request.

Return Value

Type: System::String
eTag of the media resource associated with the entity.

The GetStreamETag method is called by the data service runtime to retrieve the eTag of the media resource that is associated with the entity.

You must implement the GetStreamETag method to enable the data service to manage concurrency for the media resource.

.NET Framework

Supported in: 4

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.