Answer Questions

• Rohland persistence runs only one workflow instance at a time ??

  Hi In a project i'm working with (HelpDesk),a help desk assistance might receive many trouble tickets & escalate them. Upon escalation, an event is triggered (state machine workflow). before adding the persistence service everything worked fine (ability to escalate multiple trouble tickets at a time)& after adding it, only one workflow instance is allowed, i.e. an exception is thrown once opening a trouble ticket while another one is ...Show All

• Paul Kromann TransactionInDoubtException

  Source: System.Transactions.TransactionInDoubtException: mscorlib Text: The transaction is in doubt I'm getting the following error is a very specific circumstance and I don't understand why. I've got a single unavoidably long running transaction (~90mins) that I run from a .net component against a SQL Server 2000 database. If I invoke my component from MMC.exe (COM based root) I'll often (eventually) get the above error message. However, i ...Show All

• ancernet view Cancel handler / faults cause code-behind change

  This is first time I use WWF designer, one thing make me uncomfortable is that when I switch to Cancel handler view or Faults view, all the sudden , the code-behind got changed. -- The logic added is the logic to enable the cancel/faults . Well, if it's default why not enable them from the beginning. Again , it's not a big deal, just usability. Hi Walter, This is a known issue and we are working ...Show All

• aslanky How to use Overlay Mixer

  Hi, guys, can you provide a example for me thank you very much. I use gradedit.exe, I can add the overlay mixer to the graph, but i can't set the video size to 640*480 with 24bits. It said: Can't support this format.  i delete the overlay mixer from the graph, then i can set the video size to 640*480 with 24bits. why Hi, androidi: my operating system is windows 2000, so i can't use the VMR. I want to use overlay mode to view t ...Show All

• koosha How to use Overlay Mixer

  Hi, guys, can you provide a example for me thank you very much. I use gradedit.exe, I can add the overlay mixer to the graph, but i can't set the video size to 640*480 with 24bits. It said: Can't support this format.  i delete the overlay mixer from the graph, then i can set the video size to 640*480 with 24bits. why Hi, Jordan, thank you very much for your answer. another, Is the VMR7's CLSID CLSID_VideoMixingRenderer th ...Show All

• Pedro Coelho the question about the FindInterface() method

  hi guys. i can capture the video into a file first, but when i add this code into the programm it can't capture video into a file , the file is only 64kb. the following code is i added into: hr = pBuild->FindInterface(&LOOK_UPSTREAM_ONLY, &MEDIATYPE_Video, pSCFilter, IID_IAMCrossbar, (void **)&pCrossbar); if(FAILED(hr)) { return hr; } why If I understand correctly this is because the Crossbar doe ...Show All

• Tall Dude Sheduling API Feature Request

  Are there plans for a task scheduling API as in SQL Server I've seen many workflow applications written as a number of EXEs just so they can use the configurable Windows Schedule Tasks similarly people control workflow from SQL server because it has a powerful scheduling ability. This would be an extremely useful inclusion as a configurable managed API . There are many tasks which need activating at certain times but also need to check ...Show All

• SQLMcp Persistence Store Changes on Beta 2.2?

  Hi there Are there any changes to the Tracking/Persistence Store Scripts within Beta 2.2 I installed Beta 2.2 yesterday and now I get the following exception when creating a workflow instance: System.Data.SqlClient.SqlException was unhandled Message="Procedure or function InsertWorkflow has too many arguments specified." Source=".Net SqlClient Data Provider" ErrorCode=-2146232060 Class=16 LineNumber=0 Number=8144 ...Show All

• Devil_Soul Custom Activity - including HandleExternalEvent, promote Interface

  Is it possible somehow to write a custom activity that includes some CallExternalMethod and some HandleExternalEvent activities and to "promote" the interface property to the custom activity The idea is that there is a base interface defined which includes a method and some events. One should be able to extend that interface by inheriting from it, but I want to save some work by not repeating always the same CallExternalMethod / Han ...Show All

• 0xse NameValueCollection in custom activity

  Hello, i have a NameValueCollection properties in my custom activity and when i try to fill it throught the properties window in the workflow i get the adding collection window but the add and remove button is disable is there's anyway to enable them or i need to pass those collection in through my code Regards, Tamer You need to write a UITypeEditor. Take a look at http://msdn.microsoft. ...Show All

• Khawar Conditions with runtime changed values

  Hello, I have a problem with conditions and runtime changed values. I have some custom activities with runtime changed dependency Properties (eg. filled by a "CallExternalMethod" with the return value). My workflow: ----------------------------------------------------------------------------------- PressAButton (MessageBox with the PressedButton Property with the value of the pressed Button, changed at runtime) | | StringBuild ...Show All

• JeffK_ Windows Alarm

  Does anyone know if they're going to make a Window's Alarm for Vista I use my computer for pretty much everything...it'd be nice to be able to use it as an alarm clock and it would sound or flash when you set the time to wake up in the morning. It'd be beneficial if you were installing something big, or were doing something time-sensitive where you could set the alarm, go do what you want, and the computer sounds it's alarm to tell you ...Show All

• trakatelis InfoPath and WF

  Is there a sample of how to integrate InfoPath with WF As a note, the forms data activities will be removed from WF in Beta2, but you can achieve equivalent functionality using the InvokeMethod / EventSink activities. There is also a sample with similar functionality posted here: http://www.windowsworkflow.net/ControlGallery/ControlDetail.aspx Control=2232&tabindex=4 James Huang, There is a sample ap ...Show All

• Ninja Persistence & tracking in beta 2.2

  I have created a simple application with 1 code activity, one delay and another code activity, in that order. If i'm enabling both the tracking and persistence, my workflow stops at unload If one if disabled, the other works just fine. Any ideas why this might happen I will try this too. Mean while, I have tried some other things...If I'm running the code on localhost, itt works fine...with b ...Show All

• skywing Can Beta2 be insatlled and used without Vista?

  I am keen to use WWF Beta 2 in an application i have been working on however i am unclear as to what is required to successfully install it. I have downloaded "Visual Studio 2005 Extensions for Windows Workflow Foundation Beta 2(EN)". Is this all that is required. Thanks Hi, Yes you can install it on Windows Server 2003 and Windows XP as well. Here are the list of prerequisites you need: 1. ...Show All