具有多个DataContext的事务

Question

I'm using the following code snippet to update an entity of one DataContext

// Mark the customer as updated.
context.UpdateObject(customerToChange);
// Send the update to the data service.
context.SaveChanges();

My problem however is, that I have multiple DataContexts.

For example, if I have DataContext A and B and save the changes also in this order.

Then the Behaviour right now is: If A succeeds and B fails, then it aborts. But the changes are already persisted to A!

Wished Behaviour: If A succeeds and B fails it should also rollback A.

So my idea would be something like this:

using(TransactionScope tran = new TransactionScope()) {
    contextA.updateObject(objA);
    contextB.updateObject(objB);
    tran.Complete();
}

However, this seems not to be possible across multiple data contexts.

Do you have any ideas of how to implement this correctly with OData?

Answer 1

You can try this:

Please find the ref: Using Transactions or SaveChanges(false) and AcceptAllChanges()?

    using (TransactionScope scope = new TransactionScope())
    {
    //Do something with contextA
    //Do something with contextB

   //Save Changes but don't discard yet
    contextA.SaveChanges(false);

   //Save Changes but don't discard yet
   contextB.SaveChanges(false);

   //if we get here things are looking good.
   scope.Complete();
   contextA.AcceptAllChanges();
   contextB.AcceptAllChanges();

    }