Windows Workflow Foundation (WF) provides the ability to optionally register services with the workflow runtime engine. This ability provides an extensible way to modify the behavior of the workflow runtime. WF defines a set of core workflow services that handle thread scheduling, workflow persistence, transactions, and workflow tracking. The designers of WF could have embedded the implementation of these services in the runtime engine itself, but they wisely chose to externalize them, placing their implementations in pluggable services. This places you in control. You decide which services to use (some are optional) and which implementation to use for each service.
KeywordsCustom Activity Local Service Configuration File Service Interface Service Contract
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