Why can I create a WorkflowInstance from an SequenceActivity derivative?

Question

Hello!

I was wondering why I can do this:

WorkflowInstance workflowInstance = workflowRuntime.CreateWorkflow(typeof(ValuationActivity));
workflowInstance.Start();

where ValuationActivity derives from SequenceActivity. I thought you can only instantiate subtypes of SequenceWorkflowActivity. Is there any performance concern when I run subtypes of SequenceActivity instead of SequenceWorkflowActivity?

Thanks a lot,

Carlos

Answer 1

Hi,

->"I was wondering why I can do this: "
It is because SequenceActivity is the base class of SequentialWorkflowActivity. in other words, SequentialWorkflowActivity is a class inherit from SequenceActivity.

->"Is there any performance concern when I run subtypes of SequenceActivity instead of SequenceWorkflowActivity "
I don't think there will be performance impact. but there will be some function limitation if you use SequenceAcitivity instead of using SequentialWorkflowAcitvity.

Regards

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