TransactionScope error in ambient transaction does not rollback the transaction

Question

I use an ambient transaction like this :

---

using(TransactionScope tran = new TransactionScope()) {
    CallAMethod1();//INSERT
    CallAMethod2();//INSERT
           


        

Answer 1

Read what Khanh TO says. If your connection is opened outside the outer transaction scope the connection won't be enlisted.

That is why the first call didn't rollback when the second failed. You will have to enlist your connection:

using (TransactionScope tran = new TransactionScope(TransactionScopeOption.Required))
{
   connection.EnlistTransaction(Transaction.Current);
   CallAMethod1();//INSERT
   CallAMethod2();//INSERT
   tran.Complete();
}