MediaPermissionAttribute Class

Definition

Namespace:

System.Security.Permissions

Assembly:

System.Security.Permissions.dll

Source:

MediaPermission.cs

Caution

Code Access Security is not supported or honored by the runtime.

Allows security actions for MediaPermission to be applied to code using declarative security.

public ref class MediaPermissionAttribute sealed : System::Security::Permissions::CodeAccessSecurityAttribute

[System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)]
[System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public sealed class MediaPermissionAttribute : System.Security.Permissions.CodeAccessSecurityAttribute

[<System.AttributeUsage(System.AttributeTargets.Assembly | System.AttributeTargets.Class | System.AttributeTargets.Constructor | System.AttributeTargets.Method | System.AttributeTargets.Struct, AllowMultiple=true, Inherited=false)>]
[<System.Obsolete("Code Access Security is not supported or honored by the runtime.", DiagnosticId="SYSLIB0003", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
type MediaPermissionAttribute = class
    inherit CodeAccessSecurityAttribute

Public NotInheritable Class MediaPermissionAttribute
Inherits CodeAccessSecurityAttribute

Inheritance

Object

Attribute

SecurityAttribute

CodeAccessSecurityAttribute

MediaPermissionAttribute

Attributes

AttributeUsageAttribute ObsoleteAttribute

Remarks

Caution

Code Access Security (CAS) has been deprecated across all versions of .NET Framework and .NET. Recent versions of .NET do not honor CAS annotations and produce errors if CAS-related APIs are used. Developers should seek alternative means of accomplishing security tasks.

MediaPermissionAttribute controls the ability for audio, image, and video media to work in a partial-trust Windows Presentation Foundation (WPF) application. The scope of the declaration that is allowed depends on the SecurityAction that is used.

The security information declared by a security attribute is stored in the metadata of the attribute target and is accessed by the system at run time. Security attributes are used only for declarative security. For imperative security, use the corresponding permission class, MediaPermission.

Constructors

Name	Description
MediaPermissionAttribute(SecurityAction)	Initializes a new instance of MediaPermissionAttribute.

Properties

Name	Description
Audio	Gets or sets the audio permission level for the MediaPermissionAttribute.
Image	Gets or sets the image permission level for the MediaPermissionAttribute.
Video	Gets or sets the video permission level for the MediaPermissionAttribute.

Methods

Name	Description
CreatePermission()	Creates and returns a new MediaPermission.

See also

• Extending Metadata Using Attributes