ASP.NET Core Identity – get current user

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If your code is inside an MVC controller:

public class MyController : Microsoft.AspNetCore.Mvc.Controller

From the Controller base class, you can get the ClaimsPrincipal from the User property

System.Security.Claims.ClaimsPrincipal currentUser = this.User;

You can check the claims directly (without a round trip to the database):

bool isAdmin = currentUser.IsInRole("Admin");
var id = _userManager.GetUserId(User); // Get user id:

Other fields can be fetched from the database’s User entity:

  1. Get the user manager using dependency injection

    private UserManager<ApplicationUser> _userManager;

//class constructor
public MyController(UserManager<ApplicationUser> userManager)
{
    _userManager = userManager;
}

  2. And use it:

    var user = await _userManager.GetUserAsync(User);
var email = user.Email;

If your code is a service class, you can use dependency injection to get an IHttpContextAccessor that lets you get the User from the HttpContext.

    private IHttpContextAccessor _httpContextAccessor;

    public MyClass(IHttpContextAccessor httpContextAccessor)
    {
        _httpContextAccessor = httpContextAccessor;
    }

    private void DoSomething()
    {
        var user = _httpContextAccessor.Context?.User;
    }

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