Answer Questions

• Alexnaldo Santos context.CloseActivity()

  hi all, public void OnEvent(object sender, ActivityExecutionStatusChangedEventArgs e) { Debug.Assert(e.ExecutionStatus == ActivityExecutionStatus.Closed); ActivityExecutionContext context = sender as ActivityExecutionContext; ..... if (e.Activity is InfoFinalActivity) { context.CloseActivity(); return; } } cotext have three child context ,and ExecutionStatus of all child activitys in cotext is Closed, but there is a exception when i run the code 'context.CloseActivity();', CompositeActivity cannot transition to 'Closed' status when there are active child context still exist for child activity. please tell me why, many thanks. ...Show All

• Madhusudanan Warning RTM Vista SDK will break your XP Apps

  They have done it again! In the RTM of the Vista SDK they have added a new member to the NONCLIENTMETRICS struct. #if (WINVER >= 0x0600) int iPaddedBorderWidth; #endif /* WINVER >= 0x0600 */ So if you set WINVER to 0x0600 and compile your application it will no longer work on XP. If you look at the documentation in MSDN it doesn’t mention anything about the struct size change for Vista so how are developers supposed to know this will break backward compatibility I'm experiencing this problem too! With WINVER set to 0x0600 my app builds and runs fine in Vista RC2, but when run in XP it fails. If I call the following code in XP, the NONCLIENTMETRICS s ...Show All

• robinjam News: "WPF/E" Feb 2007 CTP is Live!

    Earlier today, you may have noticed your “WPF/E” December Community Technology Preview (CTP) control expired.  No worries though- we’ve just posted the February CTP for Windows and Mac  to Microsoft's download center and updated the samples on the Channel 9 Playground to work with the new CTP.  Note that to get your samples working with the February CTP, you’ll need to change out the agHost.js file with the new one found here . Tomorrow we’ll update the website with details on what’s new in this release, and an updated SDK and samples will be available soon too. Thanks, "WPF/E" Marketing I have been using the DEC CTP with no problem but the Feb refuses to load on my development box... l ...Show All

• Majid.vagheeian WebCam Pan/Tilt with VB.NET

  I am trying to figure out how to control the Pan/Tilt of a Creative Live! Motion webcam. I have seen some posts which talk about the Platform SDK (which I have downloaded) and then say to look at the GraphEdit program. I'm sorry, but I can't figure out how that helps with determining the objects/API calls needed to control the WebCam as required. Has anybody actually tried to control the Pan/Tilt of these webcams and if so, give me some pointers on where to start. I can't find any DirectShow namespace when reference the DirectX libraries in VS2005. Where do I find it (if in fact, I need it) Thanks hi have find a solution for the problems you faced I am also trying to control the movement of c ...Show All

• DRoden Repeat processing for multiple users in state machine

  Document review workflow with one to many reviewers. Each reviewer can approve, reject, skip, submit comments, etc. (i.e. several possible events). I am looking for recommendations on how best to implement this facet of the state machine. OK, interesting. I had actually defined the CorrelationParameter to be the base-class InstanceId. You’re saying I don’t even need that. (I assume because it is implicit feature of ExternalDataEventArgs). The next thing I am working on is waiting for completion of the child (individual reviewer) workflows. First, for each child, I was planning on having a Listener to receive either a completion event (external event from the web UI) or continually send an email ...Show All

• Raymundo Chapa94595 Writing to HKLM

  I'm using the RTM release of Windows Vista and testing my application to see if it will run on Vista as a standard user. I'm seeing some strange behaviour and I'm wondering if anyone can help me figure this out. My application writes some data to HKLM\Software. I was expecting to see this write getting redirected to the VirtualStore when running as a Standard user. However, that does not seem to be happening. My app is able to write to HKLM\Software. My app is not running with elevated privileges and Virtualization is ON. I even tested my app with the Standard User Analyzer tool thinking it would possibly show me some errors when writing to registry but nothing showed up there either. Strangely enough, I see the same behavior when running ...Show All

• Redmanmc WinWf, SharePoint and OnActivated

  We have an InfoPath form in SharePoint that is triggering a workflow. When referencing the InfoPath form as such: private void OnActivated(object sender, ExternalDataEventArgs e) { // Read the association and initiation data. XmlSerializer serializer = new XmlSerializer(typeof(WorkflowStages)); StringReader initReader = new StringReader(this.workflowProperties.InitiationData); WorkflowStages initiationData = serializer.Deserialize(initReader) as WorkflowStages; } everything works fine if it is instead coded as public WorkflowStages initiationData; private void OnActivated(object sender, ExternalDataEventArgs e) { // Read the association and initiation data. XmlSerializer s ...Show All

• thanksforhelp Data Activities

  Hi All, could you please tell me, why there aren’t Data Activities(Wait for Data, Update Data...) by Framework 3.0 any more What can replace this activities By the way, in my workflow from an activity i would like to invoke a mask, after a pause time (delay) if the mask not be filled, it will be continue to wait once more time, else exit, the question ist, how can i detemine in the workflow whether the user have reacted or not. Any help ist appreciated Regards The Data activities were removed around Beta 2 or 2.2 time frame. You can use CallExternalMethodActivity and HandleExternalEventActivity in place of the data activities. If you want to wait until the user has done something or a period of time ha ...Show All

• sharpMoon Error calling events on a suspended workflow

  Hi, I'm running a state machine workflow, and trying to fire events on an existing instance, but getting the following error: {"EnqueueItemOnIdle cannot be called on suspended workflows."} System.Exception {System.InvalidOperationException} I tried calling the Resume() method on the WorkflowInstance immediately before raising the event, but that didn't make any difference. Any ideas how I can "un-suspend" the instance to allow events to be raised to it Many thanks, David Cowell Is your workflow suspended Do you have Suspend activities in your workflow or call instance.Suspend() from the host If so, calling instance.Resume() and the enqueing an event may ...Show All

• Heng-yi Liu Standard User Analyzer causes COM and ActiveX to fail

  We have a legacy application programmed in C++ and MFC that runs on Windows 2000 and XP but has problems with COM and ActiveX when run on VISTA. This app is built with Visual Studio 2003. I remotely debugged this app running on Vista from my development machine and found that the COM and ActiveX problems is the app trying to instantiate the COM components but they return E_ACCESSDENIED. I have checked the following: 1. The COM components on both my development machine (XP) and the test machine (VISTA) have the same ACL’s. 2. The access denied problem occurs if I am logged into the test machine (VISTA) as a local user or an administrator (Admin Approval Mode). 3. I added: HRESULT hr ...Show All

• BLueDeViL DeviceTopology for Volume control

  hi, using WASAPI i'm able to change the volume of Master Volume control. But how to change the volume of rcording control devices ...Show All

• bsam Versioning in workflows

  I'm writing a web service that hosts the WF runtime and the idea is that people can write their own WF assemblies that are then picked up by the web service and made available to the outside world. This all seems to be working OK apart from the problem with versioning that has been mentioned elsewhere on these forums. I guess I can probably deal with keeping several different versions of the same assembly around based on what versions are still in use. But what I'd like to know is if there is a way to deal with in-progress workflows that can't find their relevant WF assembly, since the chances are this will happen at some time I'd like to be able to terminate them but I'm unable to get hold of a WorkflowInstance so can't terminate them tha ...Show All

• Fositron Setting Default Sound Device programmatically in Vista

  Hi, In my application I need to set programmatically the default sound device (playback device), on XP there is a way changing the HKEY_CURRENT_USER\Software\Microsoft\Multimedia\Sound Mapper\Playback value, but on Vista this isn't working. Using the new Core Audio API there is no way to change the default sound device, only to get it with GetDefaultAudioEndpoint() method from IMMDeviceEnumerator interface. I tried to fiigure out which keys/values are changed in the registry when I manually change the default device. Actually there are 3 binary values changed "Role:0", "Role:1" and "Role:2" under the following key: "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\A ...Show All

• bpeikes How to use Oracle 9i with TransactionScope in .Net 2.0

  Hi, I want to use TransactionScope with Oracle 9i. What is difference to MS SQL Server Oracle does not promote the distributed transaction. why dont you tell the system.data folks you work with them. i don't. here is example code: using (TransactionScope scope = new TransactionScope()) { decimal dec1 = SiteProvider.BusinessObject.SaveToDB(); foreach (Item i in BO.Items) { //save children to DB in scope decimal dec2 = SiteProvider.BusinessObject.SaveChildToDB(); } scope.Complete(); return dec1; Unable to get error message (6106). Yes I just saw the error and I am using transactio ...Show All

• BRCEWANE How to generate xaml file from rehosted sample??

  Hi, in the rehosting workflow designer sample ( Lab 10), the generated files are: .xoml, .cs and .rule. My question is what if I want to view the workflow in xml file format .xaml How could I change the code so that the generated files include .xaml file Thanks.. WF does not current supporting defining new properties in XAML. That is why you get a code behind file. If you want those properties and XAML, then you need to use a custom base class. There are several examples in this forum of doing just that. Matt It depends on if you are compiling the XAML or executing the xaml. If you are going to compile the XAML you can use the Code element to define blocks of code ...Show All