If one of the resources doesn't support transactions, then no,
System.Transactions isn't an option. You can get more information on
transactions in this topic:
http://msdn2.microsoft.com/en-us/library/0abf6ykb.aspx

--Mary

Hello Bill,

One of the great things about System.Transactions is that it's an
extensible system. So you could, theoretically, create appropriate
rollback code yourself for those parts of the operation that don't support
transactions themselves, and use the System.Transactions infrastructure as
a very clean way of interfacing with the combined handling.

Of course it has to be said that it can be very difficult and/or
comparatively inefficient to create a transaction-enabled layer around a
subsystem that doesn't have any support for this itself, so you should
probably make sure you

               Oliver Sturm

[ I actually managed to send my previous post before it was finished, so
please disregard in favor of this second, complete, try. ]

Hello Bill,

One of the great things about System.Transactions is that it's an
extensible system. So you could, theoretically, create appropriate
rollback code yourself for those parts of the operation that don't support
transactions themselves, and use the System.Transactions infrastructure as
a very clean way of interfacing with the combined handling.

Of course it has to be said that it can be very difficult and/or
comparatively inefficient to create a transaction-enabled layer around a
subsystem that doesn't have any support for this itself, so you should
probably make sure you really have the requirement before you start
working on this.

A pretty long while back I had a look at taking part in
System.Transactions transactions, and I blogged about it here:

  http://www.sturmnet.org/blog/archives/2005/02/07/systemtransactions1/

Later I found an article by Sahil Malik here:

  http://www.codebetter.com/blogs/sahil.malik/archive/2005/04/28/62604.aspx

I'm sure there's more information about this to be found today, nearly two
years later, so the above will probably just be a quick intro, if at all.

               Oliver Sturm