ApplicationParts.Controllers.ManageController.LinkLogin C# (CSharp) Метод

        public IActionResult LinkLogin(string provider)
        {
            // Request a redirect to the external login provider to link a login for the current user
            var redirectUrl = Url.Action("LinkLoginCallback", "Manage");
            var properties = _signInManager.ConfigureExternalAuthenticationProperties(provider, redirectUrl, _userManager.GetUserId(User));
            return Challenge(properties, provider);
        }