Answer Questions

• Katherine Customized IfElse activity in a Custom Workflow Designer

  Hi everybody. I host a workflow designer in my application and need to provide users with an IfElse activity that works as simple as possible "Declarative Rule Condition" mode still requires users to reference certain values and compare them with others, and this considered as writing code. I, instead, would like to just have a property like RunThisBranchWhen <value>, so the users could just set the <value> and it would be automatically compared with a value coming from the previous activity. My question is: Can the standard IfElse activity be redesigned to work this way or I have to write my own IfElse from scratch Any details/examples would be greatly appreciated. Thank you ...Show All

• Islam Imam Verifying user's password

  During my install I prompt the user for their username and password. I then try to verify this, but it requires elevated priviledges. The documentation says to add the msidbCustomActionTypeNoImpersonate flag to custom actions, but this flag only works on deferred actions. Does anyone know of another way that I can verify the users password Thanks, Anthony I need to do this because I'm installing services that require a network username. Anthony The could potentially work, but I will have to do some testing with the QA group. Thanks, Anthony It is designed for a domain environment. ...Show All

• THNQDigital Playing audio files other than 16bit WMA files?

  I'm experimenting with a simple jukebox app, just loading the "source" property of a MediaElement with various audio file types, and have no problem playing WMA files encoded at 16bit, 44.1k, but can't get 24bit WMAs or any MP3s to play at all - is there a particular encoding required for MP3 WPF/E does not yet have support for the MP3 codec. We will be adding this in a future CTP. - mike ...Show All

• Rafael Mores Elevating a process / querying elevation status (LUA/UAC)

  Hi, how would I go about programmatically elevating my process (as in an 'elevate now' button) Also, how would I query if my process is running with full privileges or not Thanks, Relja The annoying thing is you can not programmatically elevate. You have to start a process the the OS elevates for you if the manifest of the started .exe is setup for. Ciao Hermann ...Show All

• BioGeek Expired timers are processed very slowly

  We have a process where thousands of workflows are created within 30 min time. Most of these processes are awakened by a delay some hours later, invoke a web service and then end. This all works perfectly, except that the workflows that expired are processed sequentially, one after the other, making the process take several hours instead of the 30 min it would take if several workflows were processed in parallel, we tested it by removing the delay. Also, because of the sequential processing, the workflows that are run last are run much later that the expiry time. This is using ManualWorkflowSchedulerService and useActiveTimers=true. Is there a way to force ManualWorkflowSchedulerService to process several expired workflows in parallel Tha ...Show All

• turnbui IShellWindows behaviour changed under Windows Vista - Update

  Hi It seems to me like IShellWindows only enumerates "true" Shell Windows under Vista when UAC is enabled. Internet Explorer Windows are ignored, unlike in previous Windows versions. If I disable UAC completely (via msconfig), it works as under Windows XP. However, when UAC is enabled, no matter what user rights I have tried, it behaves as described above. Is there a way to elevate the rights of an appication so that it can enumerate the IE windows Or is there another way to enumerate all open Internet Explorer windows in Vista and access their IWebBrowser interface Thanks in advance, Robert PS: I have posted this under "Internet Explorer Extension Development" a few weeks ago, but I got no usable answers. S ...Show All

• martina76 Best practices for integrating WF & WCF?

  Hi, I was thinking about designing a SOA platform on top of WCF, where WF gets the task to orchestrate the services. So I was searching for ways WF could interoperate with WCF. Currently I see only two approaches to do so: a) workflow communicates with the outside world via usual local services, which might be backed by WCF Services. This approach is shown in the expense reporting sample. b) workflow communicates via direct calls to WCF Services. This approach is shown by Roman Kiss in http://www.codeproject.com/useritems/CustomRemotingForWorkflow.asp Comparing this two approaches I would say following (though I'm pretty new to this topic and might be wrong): I like in a) that it's transparent whether one is using a light weight local serv ...Show All

• MagedSalah Crazy MP3 playback

  Hi there! I’m using DirectShow to play a MP3 file from the 45th second onwards and want the music to play in synchronization to what is displayed on screen. This is what I do: VOID OpeningSequence() { Bitmap* img = NULL; img = LoadBMP( L"opening_quote.png", WINDOW_WIDTH, WINDOW_HEIGHT, 0, 0 ); MediaPlayer :: LoadMedia(PATH_TO_MUSIC); FadeScreenIn( img, 0, 8000, 5, 0, 0 ); MediaPlayer :: SetMediaPosition( 45 * 10000000); MediaPlayer :: PlayMedia(); FadeScreenOut( img, 2000, 5000, 7, 0, 0 ); delete img; img = LoadBMP( L"produced_opening.png", WINDOW_WIDTH, WINDOW_HEIGHT, 0, 0 ); FadeScreenIn( img, 0, 8000, 5, 0, 0 ); FadeScreenOut( img, 1000, 1000, 7, 0, 0 ); MediaPlayer :: StopMedia(); return; } The music for some reason ...Show All

• Nickeay Volume Shadowcopy Services

  Hi, we've been using VSS for our application on Windows XP and are now trying to make it work properly on Vista as well. I've broken out the code and removed error handling to make it a bit easier to look at CoInitialize(0); HMODULE dll = LoadLibrary(TEXT("vssapi.dll")); typedef HRESULT(__stdcall *PROC)(IVssBackupComponents **); PROC createComponents = reinterpret_cast(GetProcAddress(dll, "CreateVssBackupComponentsInternal")); IVssBackupComponents* components = 0; createComponents(&components); components->InitializeForBackup(); components->SetBackupState(true, true, VSS_BT_FULL, false); IVssAsync* sync = 0; HRESULT res = components->GatherWriterMetadata(&sync); if ( sy ...Show All

• Zulbaric Impersonification ASP.NET + Workflow

  Hi, I have a WebService which start a workflow. I have to search some resources, files, .. on network so I use impersonification with the system.web configuration. In a Web service I have the right of the user specify by the impersonate configuration. But when I'm in the workflow, I haven't the same rights. Is there a configuration on the workflow runtime to specify the user use by the workflow application How can I use the identity specified in the Web.config In the Web.config we can found : <configSections> <section name="WorkflowRuntime" type="System.Workflow.Runtime.Configuration.WorkflowRuntimeSection, System.Workflow.Runtime, Version=3.0.00000.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35&qu ...Show All

• ReneeC New xp pro machine, MSDTC not installed or configured?

  Hello everyone, I purchased a brand new shiny development machine last weekend (one of the new dual core 2 processor machines...two thumbs way up!). The operating system on the machine is XP Pro. I am coding a C# 2005 winforms application which requires MSDTC and after opening my C# project and running it I noticed that MSDTC is not installed on my new machine. I thought MSDTC was installed on every windows machine but apparently that is not correct. So when I go to component services to look at the Distributed Transaction Coordinator the "my computer" icon has a red arrow over it instead of a green arrow which makes it look like there is a problem. If I click on the "distributed transaction coordinator" folder under co ...Show All

• mrotoloni ic:TimeExpires -- what's it for?

  An InfoCard contains an ic:TimeExpires element, which the documentation says is the expiry date of the card. But CardSpace seems to ignore this element -- for example, even if I set it to Jan 1 1999, CardSpace lets me use the card, with no errors and no warnings. The element is never sent to the Relying Party or the Identity provider. So, what's it for ic:TimeExpires is really just a hint to the user about the expiration date, and is displayed on the card details page. Enforcement of an expired card is really up to the STS which knows the current state of the associated account. If the expiration time was enforced on the client, it could be circumvented by malicious code. ...Show All

• bilalso wlanapi.dll not found

  hello all, I am not able to find the wlanapi.dll in the windows SDK.could anyone tell where can i find it is there any redistributable package with the sdk where this dll might be present thanks in advance Jyoti ...Show All

• dodo502b How can I Persistence a workflow Instance by different type?

  I have a asp.net application that runs lots of workflow instances,but I don't want to persistence all workflow instances in data store. Some workflows should be persisted,but some should not be persisted. How can I do Currently the persistence capability is an all or none service. What you could do is implement your own custom persistence service that does the filtering for which workflows to persist, you have to make sure though, that workflows that are going to be ignored by the persistence service do not use any workflow features that require a persistence service available, e.g. transactional activities. If you want to use the oob sql persistence service, your custom persistence service could ...Show All

• Hilley How to orchestrate external application screens ?

  Hello, I am currently investigating if Workflow Foundation could be used in my specific case: - define a task sequence - each task is a human task to accomplish - the task is defined as an URL to some specific web pages - once the user click close on a specific web page, the control returns to Workflow Foundation - WF Foundation can run a java class to determine what is the next task to accomplish My questions: - Can WF Foundation trigger some external web pages - What is the expected return (on WF Foundation side) when the user quits the web page - Can WF Foundation call some java class Thanks ! Best regards, Eric Hi Eric - the way I see the pro ...Show All