How to Execute workflow service using WorkflowApplication.Run

Question

Hi,

I've created & saved a workflow in database. The workflow was created using workflow reghosted designer. The workflow consists of a recieve/SendReply activity pair. In between I'm calling my custom activity which is setting some response object and this object is being sent to client using SendReply activity described above.

My question is, How can I test this workflow in rehosted workflow designer?

If I use WorkflowApplication.Run, I stuck in infinite loop and debugger hit neither workflowCompleted nor WorkflowUnhandledException event handler. If I create a normal workflow without message activities, it execute well and return the result.

Any help in this? Example would be great!!

Nitin

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NitinV

Answer 1

Is

CanCreateInstance

set in your Receive? Try marking if it wasn't.

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Answer 2

Hi,

As far as I know, host workflow service in WorkflowApplication is not supported. To host a workflow service in a managed application, you can use the WorkflowServiceHost class. For the detailed information, please refer to:

Hosting Workflow Services

http://msdn.microsoft.com/en-us/library/ee358721.aspx

Thanks.

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Leo Tang [MSFT]
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Answer 3

LeoTang, indeed, it's 'possible', but i don't see a reason to do it. The correct way would be to use a WorkflowServiceHost as you said.

Check how to do it: http://stackoverflow.com/questions/8740574/can-i-run-wcf-workflow-service-using-workflowapplication-class/8828244#8828244

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Answer 4

Thanks for replying Davi. Your link worked for me.

There reason for do is testing the workflow. I am creating a rehosted designer where user can create workflow service as well normal workflows. I need to give user freedom to test these workflows and that is why I want to host the service and call it via the client. My work done but when I implemented workflow tracking to execute & track workflow, I've got another problem.

When I track the workflows from database it tracking worked well but when I add some activities to this workflow and test & track I see that tracking does not highlight newly added activity and bypass to the next activity. However, when I save this workflow to database and retrieve and test it again, this time tracker is able to highlight the activity with yellow border.

Any idea why this is happening. I followed the same steps described in 

http://blogs.msdn.com/b/kushals/archive/2009/12/22/visualworkflowtracking-aka-workflowsimulator.aspx

I am facing the same problem described by "Gaurish 3 Mar 2011 9:21 PM " in comment section of the link.

Any Idea??

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NitinV