GacIdentityPermissionAttribute Class
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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


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


Gets or sets a security action.(Inherited from SecurityAttribute.)


When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)


Gets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared.(Inherited from SecurityAttribute.)


This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)


Returns the hash code for this instance.(Inherited from Attribute.)


Gets the Type of the current instance.(Inherited from Object.)


When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)


When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)


Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)


Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides 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.


Starting with the .NET Framework 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.

Legacy Code Example

The following example demonstrates the use of GacIdentityPermissionAttribute.

using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Configuration;
using System.ServiceModel.Description;
using System.ServiceModel.Dispatcher;
using System.Text;

namespace Microsoft.WCF.Documentation
  class EndpointBehaviorMessageInspector : BehaviorExtensionElement, IEndpointBehavior, IDispatchMessageInspector, IClientMessageInspector
    // IEndpointBehavior Members
    public void AddBindingParameters(ServiceEndpoint serviceEndpoint, System.ServiceModel.Channels.BindingParameterCollection bindingParameters)

    public void ApplyClientBehavior(ServiceEndpoint serviceEndpoint, ClientRuntime behavior)
      behavior.MessageInspectors.Add(new EndpointBehaviorMessageInspector());

    public void ApplyDispatchBehavior(ServiceEndpoint serviceEndpoint, EndpointDispatcher endpointDispatcher)
      endpointDispatcher.DispatchRuntime.MessageInspectors.Add(new EndpointBehaviorMessageInspector());

    public void Validate(ServiceEndpoint serviceEndpoint)

    // BehaviorExtensionElement members
    public override Type BehaviorType
      get { return typeof(EndpointBehaviorMessageInspector); }

    protected override object CreateBehavior()
      return new EndpointBehaviorMessageInspector();

    // IDispatchMessageInspector Members

    public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel, InstanceContext instanceContext)
      Console.WriteLine("AfterReceiveRequest called.");
      return null;

    public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
      Console.WriteLine("BeforeSendReply called.");

    #region IClientMessageInspector Members

    public void AfterReceiveReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
      Console.WriteLine("AfterReceiveReply called.");

    public object BeforeSendRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel)
      Console.WriteLine("BeforeSendRequest called.");
      return null;


.NET Framework
Available since 2.0

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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