AjaxItemSelect.Controllers.UserAccount.UserAccount C# (CSharp) Метод

        public UserAccount(ClaimsPrincipal user)
        {
            if (HttpContext.Current.Request.IsAuthenticated)
            {
                Principal = user;

                // Extract the role claims
                RoleClaims = user.Claims.Where(c => c.Type == ClaimTypes.Role).Select(c => c.Value);

                // User name
                Name = user.Identity.Name;

                // Extract the given name(s); if null or empty, then set an initial value
                string gn = user.Claims.SingleOrDefault(c => c.Type == ClaimTypes.GivenName).Value;
                if (string.IsNullOrEmpty(gn)) { gn = "(empty given name)"; }
                GivenName = gn;

                // Extract the surname; if null or empty, then set an initial value
                string sn = user.Claims.SingleOrDefault(c => c.Type == ClaimTypes.Surname).Value;
                if (string.IsNullOrEmpty(sn)) { sn = "(empty surname)"; }
                Surname = sn;

                IsAuthenticated = true;
                IsAdmin = user.HasClaim(ClaimTypes.Role, "Admin") ? true : false;
            }
            else
            {
                RoleClaims = new List<string>();
                Name = "anonymous";
                GivenName = "Unauthenticated";
                Surname = "Anonymous";
                IsAuthenticated = false;
                IsAdmin = false;
            }

            NamesFirstLast = $"{GivenName} {Surname}";
            NamesLastFirst = $"{Surname}, {GivenName}";
        }