// GET: Contact/Details/5
        public async Task <IActionResult> Details(int?id)
        {
            try
            {
                if (id == null)
                {
                    return(NotFound());
                }

                var contact = await _contactModel.GetContact(id.Value);

                if (contact == null)
                {
                    return(NotFound());
                }

                return(View(contact));
            }
            catch (Exception ex)
            {
                _logger.LogError($"{ ex.Message } {(ex.InnerException != null ? ex.InnerException.Message : string.Empty)} {ex.StackTrace}");
                return(RedirectToAction(nameof(Error)));
            }
        }
 public Contact GetContact(int id)
 {
     if (id > 0)
     {
         var product = contactModel.GetContact(id);
         if (product == null)
         {
             return(null);
         }
         return(product);
     }
     else
     {
         return(null);
     }
 }