Workflow – What is a Correlation Token?

You can consider a correlation token
as a unique identifier that enables mapping between the objects in a workflow and the environment that is hosting the Windows Workflow Foundation (WF) workflow runtime.

You will have a separate correlation token for the each of the following:

  • The workflow itself
  • Each task you need to reference in the workflow

Declare the correlation token for the workflow in the OnWorkflowActivated activity. Then, for each activity that affects the entire workflow, bind that activity’s correlation token to the correlation token of the OnWorkflowActivated activity.


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