Get UserId (int) in new MVC4 application

问题

New MVC4 application created UserProfile table :

UserId(int) | UserName(nvarchar)

In controller :

  string currentUser = User.Identity.Name;  // returns UserName

  var mu1 = Membership.GetUser(); // returns null

  var mu2 = Membership.GetUser(currentUser); // returns null as well

I read a lot of threads and they all talk about getting Guid, which I don't even have in user and membership tables.

Is there a way to get the UserId (int) of currently logged in User ?

回答1:

Make sure you add [InitializeSimpleMembership] to the top of your controller so that it initializes the simple membership via the file InitializeSimpleMembershipAttribute.cs in the Filters directory.

Then you can access the user id in several different ways:

int mu1 = (int)WebSecurity.CurrentUserId;
int mu2 = (int)Membership.GetUser().ProviderUserKey;

回答2:

You can get UserId as int with

WebSecurity.GetUserId(User.Identity.Name);

Additional Information: You should add [InitializeSimpleMembership] on top of controller class if you use another controller than AccountController.

回答3:

mu1 and mu2 will contain an instance of MembershipUser if the user has successfully authenticated. MembershipUser has a ProviderUserKey property of type object that will contain the identifier for a user.

Membership.GetUser() requires a MembershipProvider to be hooked up for the application and for the user to be authenticated; since you are seeing null returned, this would suggest that one of the aforementioned conditions is not met.

回答4:

You can get UserId

if (Request.IsAuthenticated)
 {
  var membership = (SimpleMembershipProvider)Membership.Provider; 
  int idUser = membership.GetUserId(User.Identity.Name);
 }

来源：https://stackoverflow.com/questions/15180434/get-userid-int-in-new-mvc4-application