Overview

Every WorkflowInstance contains a property called StateGuid.

This property is automatically set to a new GUID every time the Workflow Instance moves to a different Workflow Step.

This provides a sort of “version stamp” for that WorkflowInstance.

For instance, consider a Workflow Instance that goes through these changes:

The CurrentStep property is insufficient to use as a “version stamp” because it has the same value for both the initial and final state.

The StateGuid value, however, is changed every time the Current Step changes, and is never reused.

Thus, the StateGuid can be used to tell if a WorkflowInstance has moved Workflow Steps, even if it returns to a previously-visited Step.