PermissionSet.RemovePermission(Type) PermissionSet.RemovePermission(Type) PermissionSet.RemovePermission(Type) PermissionSet.RemovePermission(Type) Method

Definition

Removes a permission of a certain type from the set.

public:
 virtual System::Security::IPermission ^ RemovePermission(Type ^ permClass);
public virtual System.Security.IPermission RemovePermission (Type permClass);
abstract member RemovePermission : Type -> System.Security.IPermission
override this.RemovePermission : Type -> System.Security.IPermission
Public Overridable Function RemovePermission (permClass As Type) As IPermission

Parameters

permClass
Type Type Type Type

The type of permission to delete.

Returns

The permission removed from the set.

Exceptions

Examples

The following code example shows the use of the RemovePermission method to remove a FileIOPermission from a permission set. This code example is part of a larger example provided for the PermissionSet class.

// Remove FileIOPermission from the permission set.
ps5->RemovePermission( FileIOPermission::typeid );
Console::WriteLine( "The last permission set after removing FileIOPermission = {0}", ps5 );
// Remove FileIOPermission from the permission set.
ps5.RemovePermission(typeof(FileIOPermission));
Console.WriteLine("The last permission set after removing FileIOPermission = "
    + ps5.ToString());
' Remove FileIOPermission from the permission set.
ps5.RemovePermission(GetType(FileIOPermission))
Console.WriteLine("The last permission set after removing FileIOPermission = " & ps5.ToString())

Remarks

Important

You cannot remove permissions from an unrestricted permission set. The permission set remains unrestricted after you attempt to remove the permission, and an exception is not thrown.

The following C# code attempts to remove the FileIOPermission from the FullTrust permission set, but the permission is not removed.

PolicyLevel myPol = PolicyLevel.CreateAppDomainLevel();  
PermissionSet myPermSet = myPol.GetNamedPermissionSet("FullTrust");  
myPermSet.RemovePermission(typeof(FileIOPermission));  

Notes to Inheritors

When you inherit from PermissionSet, you can change the behavior of the RemovePermission(Type) method by overriding the RemovePermissionImpl(Type) method.

Applies to