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SecurityCriticalAttribute Class

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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


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

[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Constructor|AttributeTargets.Delegate|AttributeTargets.Enum|AttributeTargets.Field|AttributeTargets.Interface|AttributeTargets.Method|AttributeTargets.Struct, AllowMultiple = false, 
	Inherited = false)]
public sealed class SecurityCriticalAttribute : Attribute

The SecurityCriticalAttribute type exposes the following members.

Public methodSecurityCriticalAttributeInitializes a new instance of the SecurityCriticalAttribute class with default scope.

Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Important noteImportant Note:

Types and members that have the SecurityCriticalAttribute cannot be used by Windows Phone application code. Security-critical types and members can be used only by trusted code in the .NET Framework for Windows Phone 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 Windows Phone, 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 Windows Phone library assemblies and that are not signed with a specific strong-name key.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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