examples asp.net mvc authentication

i'm looking examples asp.net mvc integrated asp.net forms-authentication formed membership providers correct post scenarios. i'm looking best practices here.

let's contend i have contacts list database name field, userid domain tied aspnet_users userid field. i guess something this:

public actionresult save([bind(include="name")] hit contact)
{
       // zero etc. checks wanting example
       membershipuser currentuser = provider.getuser(user.identity.name, true);
       contact.userid = (guid)currentuser.provideruserkey;
       //save etc.
}

any tips guides one?