User.Identity.Name returns null in ASP.NET Core MVC application

问题

Please check the code below. This is a controller of my ASP.NET Core 2.1 MVC application.

Problem is that I am already using cookie authenticated user, but the User.Identity.Name returns null. How can I get my current auth user on .NET Core then?

[HttpPost]
public IActionResult AddMainMenu(MainMenuItems mainMenuItems)
{
      string userEmail = User.Identity.Name;
      return Json("success");          
}

Thanks in advance.

回答1:

Just use it-

var val = User.FindFirst(ClaimTypes.Email).Value;

If your claim NameIdentifier is Email then do like above. This should work. More information found here

来源：https://stackoverflow.com/questions/52134312/user-identity-name-returns-null-in-asp-net-core-mvc-application