Step 4/20. Creating the tasks

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If the expense reports requires the manager approval,  we want the manager to receive a task in his task list in order to approve/reject the expense report.

Let’s drag and drop a CreateTask activity before the requestManagerApproval activity:

Set its Correlation token to ApproveRejectToken and the associated ownerActivityName to ExpenseReportWorkflow:

Bind the Taskproperties property to a new member (click on he ellipsis button…):

Bind the TaskId to a new member (field): ApproveRejectTaskId.

Double click on the ApproveReject task to generate a new event handler and  store a new Guid into ApproveRejectTaskId, set the task title, and associate the task with the manager:

Remove the requestManagerApproval activity.

OnTaskChange activity

Add a new OnTaskChange activity and rename it WaitForApprovalRejection:

Any event OnTaskChanged coming form the task will be handled by the WaitForApprovalRejection activity if we group them with the same correlation token (you ‘ll have a better understanding of the correlation token in the next tutorial).

Set the correlation token to ApproveRejectToken.

This is not enough, the event doesn’t carry the taskId you still need to associate this activity with the taskId:

Bind the the TaskId property to an existing member: ApproveRejectTaskId.

If we consider that when the user replies, the task should complete, then we need to drag and drop a CompleteTask activity.

CompleteTask activity

Name it ApproveRejectTaskComplete.

Set the correlation token to ApproveRejectToken.

Bind the TaskId property to an existing member: ApproveRejectTaskId.

Test

Rebuild the solution, call the install.bat and test your workflow : a new task should have neen assigned to Jim:

The workflow status will be In progress which is a good indication that the workflow is waiting for an event:

If we click on the status, we’ll get more details:

Indeed, a task has been assigned to Jim; if you click on the task Title, you’ll be redirected to the task list:

If you click on the task you’ll get more details (including the workflow association name: AcceptReject):

If Jim change the task and set it to completed:

The workflow will complete. There are many situations where the out of the box behavior is not enough, for instance if you want to display more detailed informations about the expense report, or more specific replies (approved or rejected).

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