.NET Framework Class Library
SecurityCriticalAttribute Class

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

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.SecuritySecurityCriticalAttribute

Namespace:   System.Security
Assembly:  mscorlib (in mscorlib.dll)
Syntax
<[%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_0%]([%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_1%].Assembly Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_2%].Class Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_3%].Struct Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_4%].Enum Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_5%].Constructor Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_6%].Method Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_7%].Field Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_8%].Interface Or [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_9%].Delegate, AllowMultiple := False,  _
	Inherited := False)> _
Public NotInheritable Class SecurityCriticalAttribute _
	Inherits [%$TOPIC/ms147612_en-us_VS_110_2_0_0_0_10%]
[[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_0%]([%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_1%].Assembly|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_2%].Class|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_3%].Struct|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_4%].Enum|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_5%].Constructor|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_6%].Method|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_7%].Field|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_8%].Interface|[%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_9%].Delegate, AllowMultiple = false, 
	Inherited = false)]
public sealed class SecurityCriticalAttribute : [%$TOPIC/ms147612_en-us_VS_110_2_0_1_0_10%]
[[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_0%]([%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_1%]::Assembly|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_2%]::Class|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_3%]::Struct|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_4%]::Enum|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_5%]::Constructor|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_6%]::Method|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_7%]::Field|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_8%]::Interface|[%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_9%]::Delegate, AllowMultiple = false, 
	Inherited = false)]
public ref class SecurityCriticalAttribute sealed : public [%$TOPIC/ms147612_en-us_VS_110_2_0_2_0_10%]
[<[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_0%]>]
[<[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_1%]([%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_2%].Assembly|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_3%].Class|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_4%].Struct|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_5%].Enum|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_6%].Constructor|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_7%].Method|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_8%].Field|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_9%].Interface|[%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_10%].Delegate, AllowMultiple = false, 
    Inherited = false)>]
type SecurityCriticalAttribute =  
    class 
        inherit [%$TOPIC/ms147612_en-us_VS_110_2_0_3_0_11%] 
    end

The SecurityCriticalAttribute type exposes the following members.

Constructors
  NameDescription
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps SecurityCriticalAttributeInitializes a new instance of the SecurityCriticalAttribute class.
Public method SecurityCriticalAttribute(SecurityCriticalScope)Initializes a new instance of the SecurityCriticalAttribute class with the specified scope.
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Properties
  NameDescription
Public property ScopeObsolete. Gets the scope for the attribute.
Public property TypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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Methods
  NameDescription
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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Remarks

Security-critical operations are actions that affect code access security, such as elevation of privilege through suppression of code access security checks by using the Assert method, calling unsafe managed code, and so forth. Either the SecurityCriticalAttribute attribute or the SecuritySafeCriticalAttribute attribute must be applied to code for the code to perform security-critical operations.

NoteNote

The SecurityCriticalAttribute is equivalent to a link demand for full trust. A type or member marked with the SecurityCriticalAttribute can be called only by fully trusted code; it does not have to demand specific permissions. It cannot be called by partially trusted code.

Applying the SecurityCriticalAttribute at the assembly level identifies the assembly as a security-critical assembly. The entire assembly can be identified as critical by setting the scope parameter SecurityCriticalScopeEverything.

Version Information

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1
Platforms

Windows Phone 8.1, Windows Phone 8, 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.

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