It might be the first time I someone contacted me to about a blog they wrote about custom WF activities. Of course I was chuffed that they thought I might be interested. The articles really were interesting to me so I’m doubly happy to link them:
http://www.neovolve.com/post/2010/10/01/Custom-Windows-Workflow-activity-for-dependency-resolutione28093Wrap-up.aspx
Quick spiel: Not only does Rory Primrose tackle the basic problem of doing dependency injection as a workflow activity, he also adds a custom designer on it, and tries to tackle the issues around persisting the injected dependencies. You can therefore find real-world examples of:
and also a custom Designer which uses