Can't get a code group to work

[Chris Cummings]

I'm trying to use .Net Code Access Security. I've tried to
create a code group at the user level (using strong name
membership). Every time I run the app that is a member of
the group, I get a SecurityException and never even get
into Main(). This fails even if I set the PermissionSet of
the group to Everything. The only time I can get the app
to run is if I set the PermissionSet to Full Trust. Is
there something I need to change in security.config or
some Windows security setting I need to change?

 

[Chris Cummings]

OK, I found the reason. I have the code group flagged as
exclusive (i.e. only use the permissions of this group at
the user level). But I don't see why I can't mark it as
exclusive. The documentation says that a security
exception is thrown if the assembly is a member of more
that one exclusive group which is not the case???

 

[Chris Cummings]

Actually turning of the exclusive attribute of the code
group basically gives the assembly Full Trust from the
AllCode group, so I'm back to square one.

 

[Chris Cummings]

OK, I found out why. The assembly needs to be marked as
[assembly:AllowPartiallyTrustedCallers]