public async Task <List <Contact> > GetContacts()
        {
            using (var context = contactDBContext)
            {
                var result = await context.ContactInformation.ToListAsync();

                return(TypeMapperConverter.ConvertObjectCollection <ContactInformation, Contact>(result));
            }
        }
        public async Task <List <int> > AddContact(List <Contact> inputEt)
        {
            var entity = TypeMapperConverter.ConvertObjectCollection <Contact, ContactInformation>(inputEt);

            using (var context = contactDBContext)
            {
                contactDBContext.BulkInsert(entity, options =>
                {
                    options.PreserveInsertOrder = false;
                    options.SetOutputIdentity   = true;
                    options.BulkCopyTimeout     = 100;
                });
            }
            return(entity.Select(x => x.ContactId).ToList());
        }