Expense Reporting Sample using Webservices

Expense Reporting Sample using Webservices

• Alfo

  I believe the updated expense reporting application from www.windowsworfklow.net uses WCF instead of remoting. That should get you started. It also shows the issues if you need to use ASMX web services. You have to manage routing the workflow instance id so that the correct instance of your workflow is invoked.

  Matt

  
  
  

• LYx

  Marcos,

  The plumbing between the WCF Service and WF can be done via a LocalService layer registered in the ExternalDataExchangeService. There is no built-in a messaging pattern and workflow activation between the WCF Service OperationContract and Workflow. It is a custom connectivity, based on the event/delegate fashion pattern and blocking mechanism. The WCF endpoint binding doesn't have anything to the Workflow. Once service operation has been invoked, the method can handled a process to the workflow such as creating a sync/async workflow, passing parameters, blocking process until receiving a response, etc.

  The workflow/activity design for WCF Service should be considered together based on the WCF Service behavior. For instance, for stateless enterprise operation can not be used any static property in the workflow (such as DependencyProperty), transactional operation needs to flow to the workflow (dependent transaction), availability of the Sql access (firewall), blocking call, request-reply messaging, etc.

  It will be nice having a built-in connectivity between the WCF and WF based on the service behavior, but now we can handled this stuff by custom services and activities.

  Thanks

  Roman

  
  
  

• DIW

  Are there any MSDN articles/white papers that discuss these design patterns in more detail
  
  

• I. Silvestri

  Hi. Matt it’s right, Expense Reporting Application uses WCF.
  I'm not a WCF (Indigo) expert, but one (i think) of the main features of WCF it the ability to change the communication way (transports I mean) easily.

  HTH
  Marcos

  
  
  
• Expense Reporting Sample using Webservices