Allows security actions for GacIdentityPermission to be applied to code using declarative security. This class cannot be inherited.
Assembly: mscorlib (in mscorlib.dll)
'Declaration <SerializableAttribute> _ <AttributeUsageAttribute(AttributeTargets.Assembly Or AttributeTargets.Class Or AttributeTargets.Struct Or AttributeTargets.Constructor Or AttributeTargets.Method, AllowMultiple := True, _ Inherited := False)> _ <ComVisibleAttribute(True)> _ Public NotInheritable Class GacIdentityPermissionAttribute _ Inherits CodeAccessSecurityAttribute
Thetype exposes the following members.
|Action||Gets or sets a security action. (Inherited from SecurityAttribute.)|
|TypeId||When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)|
|Unrestricted||Gets or sets a value indicating whether full (unrestricted) permission to the resource protected by the attribute is declared. (Inherited from SecurityAttribute.)|
|CreatePermission||Creates a new GacIdentityPermission object. (Overrides SecurityAttribute.CreatePermission.)|
|Equals||Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)|
|GetHashCode||Returns the hash code for this instance. (Inherited from Attribute.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|IsDefaultAttribute||When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)|
|Match||When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
|_Attribute.GetIDsOfNames||Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)|
|_Attribute.GetTypeInfo||Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)|
|_Attribute.GetTypeInfoCount||Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)|
|_Attribute.Invoke||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.
The following example demonstrates the use of .
' 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. 'Imports System 'Imports System.Security 'Imports System.Security.Policy 'Imports System.Security.Principal 'Imports System.Security.Permissions 'Imports Microsoft.VisualBasic 'Imports ClassLibraryVB ' 'Class [MyClass] ' ' Overloads Shared Sub Main(ByVal args() As String) ' Try ' Dim myLib As New Class1 ' myLib.DoNothing() ' ' Console.WriteLine("Exiting the sample.") ' Catch e As Exception ' Console.WriteLine(e.Message) ' End Try ' End Sub 'Main 'End Class '[MyClass Imports System Imports System.Security.Permissions Imports Microsoft.VisualBasic ' Demand that the calling program be in the global assembly cache. <GacIdentityPermissionAttribute(SecurityAction.Demand)> _ Public Class Class1 Public Sub DoNothing() Console.WriteLine("Exiting the library program.") End Sub 'DoNothing End Class 'Class1