Workflow 4.0: The missed dll

Question

Dear Microsoft people:
I'd been trying to finish the "Getting started tutorial" for WF 4.0 (http://msdn.microsoft.com/en-us/library/dd489454(VS.100).aspx) but there is a missed dll in Framework 4.0 installation.
When you are in the section: "How to: Create and run a Long running workflow" (http://msdn.microsoft.com/en-us/library/dd489452(VS.100).aspx), our framework installation does not have the component "System.WorkflowServiceModel.dll", and it is impossible to use idle properties for workflow instances.
Where can I download that dll? I am very interested in use these technology, that's why I will really appreciate your help.
Thanks in advance.
Ignotus.

Answer 1

I've passed along a note to the owner of the documentation to correct this.

Give it a try with System.ServiceModel.Activities, I think System.WorkflowServiceModel was a name we used for the PDC release.

thanks,

matt

---

Program Manager -- Modeling Platform and Tools http://blogs.msdn.com/mwinkle

Answer 2

Matt, first than all, thanks for your answer and sorry for delay so much mine.
But, it does not work.
I think that is something inside System.Activities or System.Activities.WorkflowInstance that is not working properly. I am receiving the error message:
'System.Activities.WorkflowInstance' does not contain a definition for 'Idle' and no extension method 'Idle' accepting a first argument of type 'System.Activities.WorkflowInstance' could be found (are you missing a using directive or an assembly reference?)
Same thing is happening with Completed method.
I don't think is a matter of a missing assembly. I think is some kind of bug inside System.Activities.dll.
What do you think?
Thanks in advance again.

Ignotus.

Answer 3

Ignotus,

I don't have the whole sample code in front of me, but I think that's a bug in the docs, and you can use this OnIdle and OnCompleted.

 myInstance.OnIdle = () =>  IdleAction.Persist;
 myInstance.OnCompleted = wcea => Console.WriteLine("you returned {0}", wcea.CompletionState);
            

Let me know if that helps,

matt

---

Program Manager -- Modeling Platform and Tools http://blogs.msdn.com/mwinkle

Answer 4

Matt, I'm getting these errors too - your suggestion allows compilation, but it's still not a working solution. Can somebody test and fix the whole 'How to' please?

Answer 5

This worked for me:

1.
Ignore the missing reference

2.
myInstance.OnCompleted = wcea =>{
     Console.WriteLine("you returned {0}", wcea.CompletionState);
     syncEvent.Set();
};

Gavin

Answer 6

Gavin:
Thanks a lot.
It works.
But I have to say that it is not enough, as the tutorial says, with execution of SqlPersistenceProviderSchema40.sql & sqlSqlPersistenceProviderLogic40.sql because a store procedure ('InsertInstance') is missing.
It is necessary to execute SqlPersistenceProviderSchema.sql & sqlSqlPersistenceProviderLogic.sql too, and works.
Thanks again Gavin, and I hope this tutorials could be corrected soon.

Ignotus