"Stefan Filip" <StefanFilip@discussions.microsoft.com> wrote in message
news:E26FE1DA-CD73-499D-B714-CE11A9A2326A@microsoft.com...
> Hello,
>
> I'm trying to launch several async calls for different methods of a web
> service, but I get this error when i'm trying to read the result (There
> was
> an error during asynchronous processing. Unique state object is required
> for
> multiple asynchronous simultaneous operations to be outstanding.). I read
> the
> post at
> http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2279895&SiteID=1,
> and I
> get the same error, but I have async calls to different web service
> methods.
> What should I do?

"Stefan Filip" <StefanFilip@discussions.microsoft.com> wrote in message
news:6CD5CF8F-E949-4A6C-809C-878710D981B6@microsoft.com...
> Thanks for answering John, but I already did that. Here's how my code
> looks
> like:
>
> languageReady = false;
> contestReady = false;
> usercontrolsReady = false;
>
> backendService.GetControlsConstantsCompleted += new
> GetControlsConstantsCompletedEventHandler(backendService_GetControlsConstantsCompleted);
> backendService.GetControlsConstantsAsync(1);
> backendService.GetContestIdByCodeCompleted += new
> GetContestIdByCodeCompletedEventHandler(backendService_GetContestIdByCodeCompleted);
>
> backendService.GetContestIdByCodeAsync((string)Request.QueryString["contest"],
> 1);
> backendService.GetLanguageIdByCodeCompleted += new
> GetLanguageIdByCodeCompletedEventHandler(backendService_GetLanguageIdByCodeCompleted);
>
> backendService.GetLanguageIdByCodeAsync((string)Request.QueryString["language"],
> 1);
>
> ((string)Request.QueryString["language"]);
>
> while (!(languageReady && contestReady
> &&usercontrolsReady))
> { }
> Session["BackendContestData"] =
> backendService.GetPublicContestData((int)Session["ContestId"]);
> backendContestData =
> (PublicContestData)(Session["BackendContestData"]);
>
> So I have 3 web services methods which are called async, and I want to
> wait
> until I get the response from all the 3 of them (I set the bool values to
> true in the event handler for the completion of the web service methods).
> As
> you can see all 3 methods are called with the same unique user state (1)
> and
> if I do this I get the error inside the event handlers. If I set each
> method
> a different unique user state (1, 2, 3 for example) then my events are not
> fired.

"John Saunders [MVP]" wrote:

> "Stefan Filip" <StefanFilip@discussions.microsoft.com> wrote in message
> news:6CD5CF8F-E949-4A6C-809C-878710D981B6@microsoft.com...
> > Thanks for answering John, but I already did that. Here's how my code
> > looks
> > like:
> >
> > languageReady = false;
> > contestReady = false;
> > usercontrolsReady = false;
> >
> > backendService.GetControlsConstantsCompleted += new
> > GetControlsConstantsCompletedEventHandler(backendService_GetControlsConstantsCompleted);
> > backendService.GetControlsConstantsAsync(1);
> > backendService.GetContestIdByCodeCompleted += new
> > GetContestIdByCodeCompletedEventHandler(backendService_GetContestIdByCodeCompleted);
> >
> > backendService.GetContestIdByCodeAsync((string)Request.QueryString["contest"],
> > 1);
> > backendService.GetLanguageIdByCodeCompleted += new
> > GetLanguageIdByCodeCompletedEventHandler(backendService_GetLanguageIdByCodeCompleted);
> >
> > backendService.GetLanguageIdByCodeAsync((string)Request.QueryString["language"],
> > 1);
> >
> > ((string)Request.QueryString["language"]);
> >
> > while (!(languageReady && contestReady
> > &&usercontrolsReady))
> > { }
> > Session["BackendContestData"] =
> > backendService.GetPublicContestData((int)Session["ContestId"]);
> > backendContestData =
> > (PublicContestData)(Session["BackendContestData"]);
> >
> > So I have 3 web services methods which are called async, and I want to
> > wait
> > until I get the response from all the 3 of them (I set the bool values to
> > true in the event handler for the completion of the web service methods).
> > As
> > you can see all 3 methods are called with the same unique user state (1)
> > and
> > if I do this I get the error inside the event handlers. If I set each
> > method
> > a different unique user state (1, 2, 3 for example) then my events are not
> > fired.
>
> Sorry for not following up sooner, but aren't you the poster who got an
> error complaining that you can't use the same state in multiple calls? Yet
> here, you're telling me that you use the same state, and you get an error.
> What did I miss?
>
> What happens if you try something like:
>
> object state1 = 1;
> object state2 = 1;
> object state3 = 1;
>
> and pass state1, etc. as the state?
>
> Perhaps you're not really passing the number 1? Are you passing some other
> value type?
> --
> --------------------------------------------------------------------------------
> John Saunders | MVP - Windows Server System - Connected System Developer
>
>