在ASP.NET Core 3.1中获取PageModel中的当前登录用户

services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
    .AddCookie(options =>
    {
        options.LoginPath = "/Account/Login";
        options.AccessDeniedPath = "/Account/AccessDenied";
    });

services.AddAuthorization();

private readonly UserManager<IdentityUser> _userManager;
private readonly SignInManager<IdentityUser> _signInManager;

public YourPageModel(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager)
{
    _userManager = userManager;
    _signInManager = signInManager;
}

var user = await _userManager.GetUserAsync(User);

string username = user.UserName;
string email = user.Email;