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MethodBuilder.AddDeclarativeSecurity Method

Adds declarative security to this method.

Namespace:  System.Reflection.Emit
Assembly:  mscorlib (in mscorlib.dll)

Public Sub AddDeclarativeSecurity ( _
	action As SecurityAction, _
	pset As PermissionSet _
Dim instance As MethodBuilder 
Dim action As SecurityAction 
Dim pset As PermissionSet

instance.AddDeclarativeSecurity(action, _


Type: System.Security.Permissions.SecurityAction

The security action to be taken (Demand, Assert, and so on).

Type: System.Security.PermissionSet

The set of permissions the action applies to.


The action is invalid (RequestMinimum, RequestOptional, and RequestRefuse are invalid).


The containing type has been created using CreateType.


The permission set pset contains an action that was added earlier by AddDeclarativeSecurity.


For the current method, the IsGenericMethod property is true, but the IsGenericMethodDefinition property is false.


pset is Nothing.

AddDeclarativeSecurity can be called several times, with each call specifying a security action (such as Demand, Assert, and Deny) and a set of permissions that the action applies to.


In the .NET Framework versions 1.0, 1.1, and 2.0, the declarative security attributes applied to a method by using the AddDeclarativeSecurity method are stored in the old XML metadata format. See Emitting Declarative Security Attributes.

The code sample below illustrates the contextual use of AddDeclarativeSecurity to require the caller of a method to have unrestricted permissions.

      ' myModBuilder is an instance of ModuleBuilder. 
      ' Note that for the use of PermissionSet and SecurityAction, 
      ' the namespaces System.Security and System.Security.Permissions 
      ' should be included. 
      Dim myTypeBuilder As TypeBuilder = myModBuilder.DefineType("MyType", _

      Dim myMethod1 As MethodBuilder = myTypeBuilder.DefineMethod("MyMethod", _
						     MethodAttributes.Public, _
						     GetType(Integer), _
						     New Type() {GetType(Integer), GetType(Integer)})

      Dim myMethodPermissions As New PermissionSet(PermissionState.Unrestricted)

      myMethod1.AddDeclarativeSecurity(SecurityAction.Demand, myMethodPermissions)

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0