public Dictionary<int, string> GetCustomerFailureCodes()
        {

            var id_customerSite =
                data.CR_CustomerUsers.Where(s => s.id_customerUser == this.User.id_CurrentUser).Select(
                    s => s.id_customerSite).FirstOrDefault();
            var id_customer =
                data.SC_CustomerSites.Where(s => s.id_customerSite == id_customerSite).Select(s => s.id_customer).
                    FirstOrDefault();

            var cust = data.UN_FailureCodes.Where(c => c.id_customer == id_customer).ToList();


            Dictionary<int, string> failureCodes = new Dictionary<int, string>();

            cust.ForEach(c => failureCodes.Add(c.id_failureCode, c.Name));

            return failureCodes;
        }