741741147

Hi everybody,

I just started to learn WF and I have a problem about it. I want to make a simple application that wants an input from user, but not wait as long as user enter. for example user give the input after 5 days later and do not want from application to wait on this time interval. So I would close the application and when open it back it will continue where it was or 5 days later it will be automatically open by services. Can do it with WF and how Please help me if anyone knows about. Thank you very much...



Re: Windows Workflow Foundation WorkFoundation

Konstantin Vyaznikov

If I understood you correctly, you would need to add persistence service (SqlPersistenceService for ex.) and to have UnloadOnIdle set to true there and to have parallel activity. One branch should have delay activity for 5 days. Another - waiting for user input (EventDriven). In this case you can unload application. On start it will continue waiting for the delay (timeout in this case) or user input.

Thanks,

Konstantin.





Re: Windows Workflow Foundation WorkFoundation

741741147

Thank you very much Konstantin I will try that. I hope I can do it Smile



Re: Windows Workflow Foundation WorkFoundation

741741147

Hi again,

I try to do these steps but I cannot add EventDrivent to my workflow. I think I might add something else before add it. One more thing I am wondering, if I close the application and open it again will it continue or start again For example I start application I want username from user, he enter the user name, than I want surname and close the application. And finally I open applicaiton again. Are there any way to continue the applicaiton from surname part Thank you for all your helps again.





Re: Windows Workflow Foundation WorkFoundation

Konstantin Vyaznikov

You need to add HandleExternalEvent. There are a number of samples how to do this. Key words are: communication between host and workflow.

>One more thing I am wondering, if I close the application and open it again will it continue or start again

Yes, if you configure persistence service. Something like

Code Snippet

string connectionString = "your connection string";
SqlWorkflowPersistenceService persistenceService =
new SqlWorkflowPersistenceService(connectionString,
true,
new TimeSpan(0, 0, 0, 0, 6000),

new TimeSpan(0, 0, 0, 5000));

workflowRuntime.AddService(persistenceService);

parameters of persistence service maybe different for you.

>For example I start application I want username from user, he enter the user name, than I want surname and close the application. And finally I open applicaiton again. Are there any way to continue the applicaiton from surname part

Then you need to have two HandleExternalEvent activities to get user name and then to get surname. With the configuration of persistence service to persist on idle, workflow will be persisted and will be resumed from that point.