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GacIdentityPermissionAttribute Class

Allows security actions for GacIdentityPermission to be applied to code using declarative security. This class cannot be inherited.

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

[AttributeUsageAttribute(AttributeTargets.Assembly|AttributeTargets.Class|AttributeTargets.Struct|AttributeTargets.Constructor|AttributeTargets.Method, AllowMultiple = true, 
	Inherited = false)]
public sealed class GacIdentityPermissionAttribute : CodeAccessSecurityAttribute

The GacIdentityPermissionAttribute type exposes the following members.

Public methodGacIdentityPermissionAttributeInitializes a new instance of the GacIdentityPermissionAttribute class with the specified SecurityAction value.

Public propertyActionGets or sets a security action. (Inherited from SecurityAttribute.)
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Public propertyUnrestrictedGets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared. (Inherited from SecurityAttribute.)

Public methodCreatePermissionCreates a new GacIdentityPermission object. (Overrides SecurityAttribute.CreatePermission().)
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 it 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 methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
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.)

Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)

This class is used to ensure that callers are registered in the global assembly cache (GAC).

The scope of the declaration that is allowed depends on the SecurityAction value 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, GacIdentityPermission.

Important noteImportant

Starting with the .NET Framework version 4, identity permissions are not used.

In the .NET Framework versions 1.0 and 1.1, demands on the identity permissions are effective even when the calling assembly is fully trusted. That is, although the calling assembly has full trust, a demand for an identity permission fails if the assembly does not meet the demanded criteria. In the .NET Framework version 2.0, demands for identity permissions are ineffective if the calling assembly has full trust. This assures consistency for all permissions, eliminating the treatment of identity permissions as a special case.

For more information about using attributes, see Extending Metadata Using Attributes.

The following example demonstrates the use of GacIdentityPermissionAttribute.

// To run this sample you must create a strong-name key named snkey.snk 
// using the Strong Name tool (sn.exe).  Both the library assembly and the 
// application assembly that calls it must be signed with that key.  
// To run successfully, the application assembly must be in the global 
// assembly cache.
// This console application can be created using the following code.

//using System;
//using System.Security;
//using System.Reflection;
//using ClassLibrary1;
//[assembly: AssemblyVersion("1.0.555.0")]
//[assembly: AssemblyKeyFile("snKey.snk")]
//class MyClass
//    static void Main(string[] args)
//    {
//        try
//        {
//            Class1 myLib = new Class1();
//            myLib.DoNothing();
//            Console.WriteLine("Exiting the sample.");
//        }
//        catch (Exception e)
//        {
//        Console.WriteLine(e.Message);
//        }
//    }
using System;
using System.Security.Permissions;

namespace ClassLibrary1
    // Demand that the calling program be in the global assembly cache.
    public class Class1
        public void DoNothing()
            Console.WriteLine("Exiting the library program.");

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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.