OdeToCode IC Logo

The Base Activity Library in Windows Workflow

Thursday, June 22, 2006

The latest OdeToCode article covers the base activity library in Windows Workflow. We look at the activities to communicate with local and remote services, evaluate rules, listen for events, and every other activity that ships in the WF toolbox.

Read it here: Windows Workflow: The Base Activity Library

As always, I appreciated any feedback you can offer.

Hao Zhai Sunday, June 25, 2006
I think you meant to say: "it's best to use a ListenActivity inside of this activity" rather than "it's best to use this activity inside of a ListenActivity" in the following paragraph:

"Handle External Event is a blocking activity, meaning the workflow is not going to proceed until the event arrives from a local service. If there is a chance the event will never arrive, or if the event needs to arrive within a span of time, then it's best to use this activity inside of a ListenActivity. As we described earlier, the Listen activity has multiple branches, and we can place a DelayActivity in one of the branches to simulate a timeout."

Hao Zhai
KnowledgeLake, Inc.
scott Sunday, June 25, 2006
Thanks for the comment. Actually, you would want to use a HandleExternalEvent inside of a Listen activity. Listen lets us listen for more than one event, so we can listen for the external event and listen for a timeout at the same time.
J Kropp Monday, July 17, 2006
Thank you for the write up on the different activities. It was nice to have a comprehensive explaination for them in one location!
Gravatar saeed Monday, October 26, 2009
I want to upload document inside my workflow how I can do it???
I need a custom activity ???
Rajar Thursday, November 5, 2009

I m a beginner in Workflow.
I have a doubt. In my applciation, some Defects are already entered in DB manually, so its states differs from open, resolved, deferred and closed. Can i use a Workflow Project for my application and set the current state of some defects to the actual state in my DB or is it necessary to start from the initial state for each defect?
Please clarify.
Gravatar Delnaz Tuesday, December 15, 2009
I think your tour guide throw this sea is amazing, I browse many links on net, but your links help me to be survived from WF sea.
I think you explain things in simply great way, then I could link WF to previous knowings...
Comments are closed.