项目
11/17/2011

MediaEntryAttribute Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Signifies that the specified class is to be treated as a media link entry.

Inheritance Hierarchy

System.Object
System.Attribute
System.Data.Services.Client.MediaEntryAttribute

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

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple := False, Inherited := True)> _
Public NotInheritable Class MediaEntryAttribute _
    Inherits Attribute

[AttributeUsageAttribute(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
public sealed class MediaEntryAttribute : Attribute

The MediaEntryAttribute type exposes the following members.

Constructors

	Name	Description
	MediaEntryAttribute	Creates a new instance of MediaEntryAttribute.

Top

Properties

	Name	Description
	MediaMemberName	The name of the property on the class that holds the media, usually binary data.

Top

Methods

	Name	Description
	Equals	Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns the hash code for this instance. (Inherited from Attribute.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Match	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

Top

Remarks

The class is treated as a media link entry, which is an AtomPub protocol for handling binary data and metadata about that binary data. The use of this attribute to define a media link entry is replaced by a new attribute that supports the streaming of binary media resource data. For more information, see WCF Data Services (Silverlight).

A type marked with this attribute has altered behavior when BeginSaveChanges is called. The media property is also known as a Media resource. On saving, the media property of the type denoted by the MediaMemberName property, is inserted by a POST request to the URI /<EntitySet>/$value.

After the POST, a PUT request with all the properties on the type other than the MediaMemberName property, which is binary content, are sent to the URI /<EntitySet>(<key>).

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

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

通过