Local Communication and Correlation Overview 

Host processes can communicate with workflows by exchanging data through custom local communication services. Host processes can also interact with a specific activity in a specific workflow instance by using a unique ID that is passed between the host process and the workflow as an event argument. This is known as correlation.

For more information about local communication and correlation, see Workflow and Application Communication.

See Also

Concepts

Using Correlation in Workflows
Communicating with Other Workflows

Other Resources

Windows Workflow Foundation

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