public async Task <List <Contact> > DeleteContactAsync(List <Contact> listContact)
{
List <Contact> result = new List <Contact>();
checkServiceCommunication();
List <Contact> gateWayResultList = await _gateWayClient.DeleteContactAsync(listContact);
if (gateWayResultList.Count == 0)
{
foreach (Contact contact in listContact)
{
int returnResult = _dataSet.DeleteContact(contact.ID);
if (returnResult > 0)
{
result.Add(contact);
}
}
}
return(result);
}