Get the ID of the current user ASP.NET Membership

Question

How do you guys manage to get the ID of the current user using the ASP.NET Membership Provider? My application is an MVC 3 using Database First approach, so I created my own database and the Membership Provider and Role Provider are using my tables (Custom Membership and Role Provider).

In one of my page (feedback), user can send feedback about my website and if he's connected, I want to include the UserID in the table when I insert.

But since the ASP.NET Membership is an IIdentity, the only thing I can access is the Name. I don't want to create a link between 2 tables using the name, I want the ID!

So what do you do in your application for this VERY simple task? I mean, in almost every page where a connected user needs to insert a value, we need the ID of the user to create the correct foreign key to the user table, right? By the way, I'm very new to this MVC framework, before that I was using ASP.NET aspx and for the user information, I was using the Session which gave me the current ID, Name and other fields as needed. Since this implementation using the Session object gave me trouble in shared hosting, I want to use the real membership.

Thanks!

EDIT

The ID I want must be an integer (in fact, I want the UserID field that is in the User table).

Answer 1

Try this;

MembershipUser mu = Membership.GetUser("username");
string userId = mu.ProviderUserKey.ToString();

For currently logged in user you could use without passing the username;

string userId = Membership.GetUser().ProviderUserKey.ToString();