MediaPermission Class

The MediaPermission describes a set of security permissions that controls the ability for audio, image, and video media to work in a partial-trust Windows Presentation Foundation (WPF) application.

System.Object
  System.Security.CodeAccessPermission
    System.Security.Permissions.MediaPermission

Namespace:  System.Security.Permissions
Assembly:  WindowsBase (in WindowsBase.dll)
XMLNS for XAML: Not mapped to an xmlns.

[SerializableAttribute]
public sealed class MediaPermission : CodeAccessPermission, 
	IUnrestrictedPermission
<MediaPermission .../>

The MediaPermission type exposes the following members.

  NameDescription
Public methodMediaPermission()Initializes a new instance of the MediaPermission class.
Public methodMediaPermission(MediaPermissionAudio)Initializes a new instance of the MediaPermission class by specifying the audio permission level.
Public methodMediaPermission(MediaPermissionImage)Initializes a new instance of the MediaPermission class by specifying the image permission level.
Public methodMediaPermission(MediaPermissionVideo)Initializes a new instance of the MediaPermission class by specifying the video permission level.
Public methodMediaPermission(PermissionState)Initializes a new instance of the MediaPermission class by specifying a permission state.
Public methodMediaPermission(MediaPermissionAudio, MediaPermissionVideo, MediaPermissionImage)Initializes a new instance of the MediaPermission class by specifying the audio, video, and image permission levels.
Top

  NameDescription
Public propertyAudioGets the current value of the audio permission level.
Public propertyImageGets the current value of the image permission level.
Public propertyVideoGets the current value of the video permission level.
Top

  NameDescription
Public methodAssertDeclares that the calling code can access the resource protected by a permission demand through the code that calls this method, even if callers higher in the stack have not been granted permission to access the resource. Using Assert can create security issues. (Inherited from CodeAccessPermission.)
Public methodCopyCreates and returns an identical copy of the current permission. (Overrides CodeAccessPermission.Copy().)
Public methodDemandForces a SecurityException at run time if all callers higher in the call stack have not been granted the permission specified by the current instance. (Inherited from CodeAccessPermission.)
Public methodDeny Obsolete. Prevents callers higher in the call stack from using the code that calls this method to access the resource specified by the current instance. (Inherited from CodeAccessPermission.)
Public methodEqualsDetermines whether the specified CodeAccessPermission object is equal to the current CodeAccessPermission. (Inherited from CodeAccessPermission.)
Public methodFromXmlReconstructs a permission with a specified state from an XML encoding. (Overrides CodeAccessPermission.FromXml(SecurityElement).)
Public methodGetHashCodeGets a hash code for the CodeAccessPermission object that is suitable for use in hashing algorithms and data structures such as a hash table. (Inherited from CodeAccessPermission.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIntersectCreates and returns a permission that is the intersection of the current permission and the specified permission. (Overrides CodeAccessPermission.Intersect(IPermission).)
Public methodIsSubsetOfDetermines whether the current permission is a subset of the specified permission. (Overrides CodeAccessPermission.IsSubsetOf(IPermission).)
Public methodIsUnrestrictedReturns a value indicating whether the current permission is unrestricted.
Public methodPermitOnlyPrevents callers higher in the call stack from using the code that calls this method to access all resources except for the resource specified by the current instance. (Inherited from CodeAccessPermission.)
Public methodToStringCreates and returns a string representation of the current permission object. (Inherited from CodeAccessPermission.)
Public methodToXmlCreates an XML encoding of the permission and its current state. (Overrides CodeAccessPermission.ToXml().)
Public methodUnionCreates a permission that is the union of the current permission and the specified permission. (Overrides CodeAccessPermission.Union(IPermission).)
Top

This permission uses the values of the MediaPermissionAudio, MediaPermissionImage, and MediaPermissionVideo enumerations.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft