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

You may find this useful:

• how to create a login screen that allows Admin users to log in as another user in the user database

EDIT

On reading your question more closely, I am not sure if that approach would work with your scenario though; when you login using Forms Authentication and Impersonate Active Directory user