public void OnGet()
        {
            AutherList = Authers.Select(cust =>
            {
                return(new SelectListItem(String.Format("{0} ({1})", cust.Name, cust.Email), cust.Email));
            });

            List <SelectListItem> list = new List <SelectListItem>();

            foreach (var cust in Authers)
            {
                list.Add(new SelectListItem(cust.Name, cust.Email));
            }
            AutherList = list;
        }