// Change a named permission set.
public NamedPermissionSet ChangeNamedPermissionSet
(String name, PermissionSet pSet)
{
// Validate the parameters.
if (name == null)
{
throw new ArgumentNullException("name");
}
if (pSet == null)
{
throw new ArgumentNullException("pSet");
}
// Find the existing permission set with this name.
NamedPermissionSet current = GetNamedPermissionSet(name);
if (current == null)
{
throw new ArgumentException
(_("Security_PermissionSetNotFound"));
}
// Make a copy of the previous permission set.
NamedPermissionSet prev =
(NamedPermissionSet)(current.Copy());
// Clear the permission set and recreate it from "pSet".
current.CopyFrom(pSet);
// Return the previsou permission set.
return(prev);
}