public void DelNanny(string id)
{
IEnumerable <BE.Contract> contract = dimp.SearchContract(x => x.NannyID == id);
if (contract.Count() != 0)
{
throw new Exception("canot delete this nanny you have to remove this contract :" + contract.Last().ContractCode);
}
dimp.DelNanny(dimp.SearchNany(x => x.NannyId == id).Last());
}
