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Asked: 2026-05-19T11:30:34+00:00

Question: Is there an easy way to find out what Activity Type was used

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Question:

Is there an easy way to find out what Activity Type was used to create a workflow?

Background:

I am writing my own WorkflowApplication based Windows Workflow 4 hosting engine and I am having some issues trying to load persisted workflows out of the database. I am using the WorkflowApplication.Load(Guid) method to start the workflow, but this requires me to already create the WorkflowApplication.

Looking at the SqlWorkflowInstanceStore databases, I don’t see the type name stored anywhere and I don’t see an easy to to associate it short of making another table myself just to store that information.

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1 Answer

  1. Editorial Team

    When you are using workflow services the relative URL is used to determine if a WorkflowServiceHost owns the workflow instance, this is done through the ServiceDeploymentsTable table in the database. There is no similar mechanism when you are using a WorkflowApplication so you have to roll your own.

    One thing you could do is use property promotion to store the type in the InstancePromotedPropertiesTable. It will save you from creating a new table but is hardly an ideal way of solving the problem.

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