One of my customer would like to call “onWorkflowItemChanged” multiple times until the he got a specific value in a list item column. I have prepared the following solution to resolve the problem :-

 

• Created a State Machine workflow
  
• Added two new states named “DocumentProcessed” and “StopWorkflow”.
  
• Set the “StopWorkflow” activity’s state as “Completed State”.
  
• Add an eventDrivenActivity in the “DocumentProcessed” state. Inside the eventDrivenActivity add the following activities :-
  
  
  
• In the IfElseBranchActivity1, set the condition property to code condition and call the check status method (which reads the column from list item and set the result.)

Code Sample

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   1: private void checkStatus(object sender, ConditionalEventArgs e)

   2: {

   3:             SPListItem item = workflowProperties.Item;

   4:             if (item["Status"].ToString().ToUpper() == "PENDING APPROVAL")

   5:             {

   6:                 e.Result = true;

   7:             }

   8:             else

   9:             {

  10:                 e.Result = false;

  11:             }

  12: }

• Set the setstateActivity2 ”DocumentProcessed” and setstateActivity4 ”StopWorkflow”.
  
• Compile the code and deploy the solution. Add a column name “Status” in Custom List.
  
• To test the solution, add the item and set the status column value “Start”. Workflow will start with “InProgress” state.
  
• Edit the item and change the status to “Pending approval”. Till then the status is pending approval you can modify the List Item and it will fire the “OnWorkflowItemChanged”.
  
• Once you changed the status column value to ‘Complete”, it will complete the workflow and set the workflow status to “Completed”.