June 2010
Intermediate to advanced
936 pages
22h 1m
English
Content preview from Pro WF: Windows Workflow in .NET 4
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The focus of this chapter is direct communication between the host application and a workflow instance. The chapter begins with an overview of long-running workflows and the bookmark mechanism used to implement them. Bookmarks provide a way to temporarily suspend execution of a workflow instance while it is waiting for external input. They also provide a way to pass data to a waiting instance as the bookmark is resumed.
But bookmarks only permit data to be passed into a workflow instance, not in the other direction to the host application. The use of workflow extensions for sending data to a host application is discussed and demonstrated next. ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.