How to retrieve ProcessWorkflowHistory

Question

I am trying to automate Workflow. Below code start the workflow and everything goes fine and I get current processinstanceid

 ProcessInstanceData pid =  _CoreServiceClient.StartWorkflow(publicationURI, instruction, _ReadOptions);

However the pid object is not found when the workflow completed and Read method gives exception

 IdentifiableObjectData processInstanceObj = _CoreServiceClient.Read(pid.Id, _ReadOptions);

Is there anyway to get processhistoryinstance id of the processinstancedata (without any hardcoding in code/config file)?

Answer 1

When a workflow finishes, the Process Instance is deleted and a Process History is created. The ProcessInstance.Finish method returns the ProcessHistory. You could pick up the Process History ID in a ProcessInstance Finish event handler.