AuthorisationRules in C#

Hello,

my problem is the following. I want to disable some properties at some objects.
therefor I use AuthorizationRules.InstanceDenyWrite(propertyname, role);
The properties are disabled, all fine.

now I want to enable this properties at the runtime.

How is it possible?

sorry for my bad english
regards, roman

The ActionList is available on The Code Project as a .net extender control .
Serge Weinstock, the author describes it far better than I can on one short page.
http://www.codeproject.com/cs/miscctrl/actionlist.asp

The solution was to clear the AuthorisationCache.

But at the moment it will only be done automaticly if the principal has changed.