Help me complete Login to active directory:

Hi, please advise am I on the right track for LDAP querying?

I have implemented the code from Chris Schiffhauer http://www.schiffhauer.com/mvc-5-and-active-directory-authentication/ but i am not sure on how to go about creating a view:

in the Add view dialog box, i filled the view name to: Login

                                                                    Templete: Create

                                                                    Model class: LoginModel (UNSOS Scheduler App)

1. I don't know which data context class to select on the dialog box. Because i don't think am connecting to my application data entities.

2. I already have a database for the application connection string in web.config, please help show me how to edit web.config file to implement the changes to incorporate active directory authentication connection string and my application connection string. 

3. How will i handle the situation where when the active directory asks for credentials.

Regards,