Hello
I tried to go through the example with the netMsmqBinding at the end of chapter 9 (Transaction).

but there, I have problems. when I try to run the WCFServiceHost I get the following exception:

Operations marked with IsOneWay=true must not declare output parameters, by-reference parameters or return values.

- The Exception seems clear to me, because you are using a return value in the method "MultiplyNumbers". Is that correct??

I used your provided code from the webpage.

Thank you for your help.
Greets Dave

Did anyone get any more info on this?
The more you think about it the more absurd it seems that you could get a return value from a message queue. Did anyone check the example before the book was printed I wonder?