identity 2.0 _LoginPartial First Name

Question

My application is MVC5 c#, I have extended the ApplicationUser model to include First and last name, works well. I am trying to figure out how I can change the loginPartial to display the user actual first name rather than their email address in the following code:

@Html.ActionLink("Hello " + User.Identity.GetUserName() + "!", "Manage", "Account", routeValues: null, htmlAttributes: new { title = "Manage" })

Answer 1

The above was my question, unfortunately I could not log with my old account. Here how I did it:

In the Account Controller / Login I added the following:

            var user = await UserManager.FindByNameAsync(model.UserName);
            var t = await UserManager.AddClaimAsync(user.Id, new Claim("FullName", user.FirstName + " " + user.LastName));

Add this class:

public static class GenericPrincipalExtensions
    {
    public static string FullName (this IPrincipal user)
        {
        if (user.Identity.IsAuthenticated)
            {

            var claimsIdentity = user.Identity as ClaimsIdentity;
            if (claimsIdentity != null)
                {
                foreach (var claim in claimsIdentity.Claims)
                    {
                    if (claim.Type == "FullName")
                        return claim.Value;
                    }
                }
            return "";
            }
        else
            return "";
        }
    }

Please see the comments above by Brendan Green, thank you Brendan for the lead. Changed the _LoginPartial to:

 @Html.ActionLink("Hello " + User.FullName() + "!", "Index", "Manage", routeValues: null, htmlAttributes: new {title = "Manage" })