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EntityDescriptor.StreamETag Property

Gets an eTag value that indicates the state of the Media Resource targeted for update since the last call to [M:System.Data.Services.Client.DataServiceContext.SaveChanges when the entity is a Media Link Entry].

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

public string StreamETag { get; internal set; }

Property Value

Type: System.String
A string value that indicates the state of data.

This topic describes new functionality in ADO.NET Data Services that is available as an update to the .NET Framework version 3.5 Service Pack 1. You can download and install the update from the Microsoft Download Center.

The eTag associated with the Media Resource is used to represent original values for use with optimistic concurrency checks according to eTag rules in HTTP RFC 2616.

The value may be empty or null. Null represents the case in which no eTag is currently associated with the Media Resource.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5 SP1