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MediaPermissionAttribute Class

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

Namespace:  System.Security.Permissions
Assembly:  WindowsBase (in WindowsBase.dll)

[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple = true, 
	Inherited = false)]
public sealed class MediaPermissionAttribute : CodeAccessSecurityAttribute
You cannot directly create an instance of this class in XAML.

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.

The following example shows how to demand that the calling code has unrestricted MediaPermissionAudio at link time. Demands are typically made in managed libraries (DLLs) to help protect methods or classes from potentially harmful code.

[MediaPermissionAttribute(SecurityAction.Demand, Audio = MediaPermissionAudio.AllAudio)]

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

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, 3.0

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