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SecurityCriticalAttribute Class

Specifies that code or an assembly performs security-critical operations.

System.Object
  System.Attribute
    System.Security.SecurityCriticalAttribute

Namespace:  System.Security
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
<AttributeUsageAttribute(AttributeTargets.Assembly Or AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Enum Or AttributeTargets.Constructor Or AttributeTargets.Method Or AttributeTargets.Field Or AttributeTargets.Interface Or AttributeTargets.Delegate, AllowMultiple := False,  _
	Inherited := False)> _
Public NotInheritable Class SecurityCriticalAttribute _
	Inherits Attribute

The SecurityCriticalAttribute type exposes the following members.

  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360SecurityCriticalAttributeInitializes a new instance of the SecurityCriticalAttribute class with default scope.
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  NameDescription
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360FinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360GetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodSupported by Silverlight for Windows PhoneSupported by Xbox 360MemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Silverlight for Windows PhoneSupported by Xbox 360ToStringReturns a string that represents the current object. (Inherited from Object.)
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Important noteImportant Note:

Types and members that have the SecurityCriticalAttribute cannot be used by Silverlight application code. Security-critical types and members can be used only by trusted code in the .NET Framework for Silverlight class library.

Security-critical operations are actions that affect code access security, such as elevation of user rights, calling unsafe managed code, and so forth. The SecurityCriticalAttribute attribute must be applied to code for the code to perform security-critical operations. Operations that are not security-critical are described as either transparent or safe-critical. Transparent code cannot call security-critical code. However, transparent code can call types and members that are marked with the SecuritySafeCriticalAttribute attribute.

For assemblies that are installed with Silverlight, the presence of the SecurityCriticalAttribute at the assembly level identifies the entire assembly as security-critical. The SecurityCriticalAttribute is ignored when it is applied in user assemblies, that is, in assemblies that are not installed with the Silverlight library assemblies and that are not signed with a specific strong-name key.

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

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

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

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