Impersonate using Forms Authentication

Question

I have an ASP.NET site that must use Forms Authentication and not Windows Authentication to access a ActiveDirectoryMembershipProvider. The site must use forms

Answer 1

If your users are using IE then you can turn on integrated security for the website and your users will be authenticated silently (no login dialog, no login page). Your impersonation will then work. If you need to target other browsers then this may not work (the user will probably be presented with a login dialog).

Your current impersonation will never work because your users are logging in using an account other than their domain account. You can't expect the site to impersonate a user which hasn't supplied his credentials. That would go against basic security principals.