Answer Questions

• manukahn Where can I host the runtime in a SOA based environment?

  Hello everybody, I am planning to use Listen, Delay and event-based Activities in a sequential workflow like the one in the hands on labs WF HOLD01. In this case the manager can approve the report, otherwise it will be escalated if a certain time-limit is exceeded... Now my question, how and where can I host the runtime if my architecture consists of web services (or respectively wcf in aspnetcompatibility mode) and the workflows take several days So far I hosted the runtime in an Application variable and after each service request I saved the instances through the manualworkflowscheduler service in the database, but now I want to add a LISTEN Activity and inside a DELAY Activity which executes after 3 days, so I must not save th ...Show All

• Keale Scaling out Windows Workflow

  Looking for a point in the right direction for scaling out an windows service hosted workflow to multiple application machines. In the MSDN article "Performance Characteristics of Windows Workflow Foundation" http://msdn2.microsoft.com/en-us/library/Aa973808.aspx they show workflows running on multiple machines. Are these machines sharing the durable queue thank you adam I have uploaded a sample to demonstrate locking of workflow instances here . you might find it useful to understand the instance locking concept Adam, OK, gotcha. I don't think this would be possible, though I might be wrong about that. If it were possible, it would be heavily corrupt the process, since the copy o ...Show All

• Alan Z Is ASP.Net suitable for hosting long running workflows?

  Given an approval scenario where a user is assigned a task and given a number of days to complete it, how can I set a timeout on the workflow instance Great to hear, Roman. I'll definitely look into it. Thanks for the resources Jason. Jason, Thanks for pointing to my articles. I would like to inform you, the article WS-Transfer for Workflow will be soon replaced by the WS-ResourceTransfer for Workflow, based on the new specification WS-ResourceTransfer . This is an extension to the WS-Transfer to deal with fragment-based access to resources. Here is one example - demo how the Web Browser Ajax client can talk to the WS-RT Web Service. Thanks Roman I personally think that a Windows service presents a be ...Show All

• nidionys User drawn ConnectionPoints

  Hi! I'm rehosting the WF designer with a root activity inherited from FreeformActivityDesigner. What I am trying to do currently is to draw the ConnectionPoints by myself (I want to draw a bitmap with an arrow instead of small squares). I didn't find any method to override which draws these ConnectionPoints. How can I accomplish that Thanks! Take a look at this sample from the community site. It includes a custom connector that controls the drawing, color, endpoint, etc. http://wf.netfx3.com/files/folders/activity_behavior/entry840.aspx In order to get this to work on the latest bits, I removed and then re-added the references to all of the workflow assemblies. I cleaned and then rebui ...Show All

• daat99 DEP

  I am getting following error while installing an application developed in .net framework 1.1 on Vista Data Execution Prevention closed windows installer. First, see if a DEP-compatible version of the program is available by visiting the software publisher's website. If the publisher has not released an updated, DEP-compatible version of the program, you can turn off DEP for the program that was closed. You will be able to use the program, but it might be vulnerable to an attack that could spread to your other programs and files. What changes i need to made to installer to rectify the error Regards Ajay DEP is turned on by default in WinXP SP2 as well and it is just as easy to turn off in Vista! I ...Show All

• Gary7 WF & WCF

  Hi, I'm trying to find the best to cummunicate to my workflow runtime when using Windows communication foundation (ServiceContract and OperationContract)... My architecure is quite the same then in the "Expense reporting demo" sample... and i want to use ExternalDataExchangeService to interact with running workflow instances. Has anyone got ideas or examples on how to do that I can't find a way other then rewriting my whole ExternalDataExchangeService layer in the Service contract... Thanks, Hadrien Hadrienlc, Thanks for pointing to my article. The following is my idea (design pattern) and sample of my incoming article: The custom remoting can be used for logical connectivity between the ...Show All

• Matthijs Koopman Source filter problem

  Hello! My source filter creates a video stream. The video stream contain a scrolling/rotating text. The problem is the text don't scroll/rotate smoothly. I'm scrolling pixel by pixel, and rotating degree by degree. Sometimes the video break, reproduces more a little and then break again. I'm using the ExtTextOut() GDI function. Here, occours the same with the microsoft sample Seeking Ball. Can anyone help me Any help will be apreciated. Is there other solution for my problem Sample code, a free library, etc Have you read http://msdn.microsoft.com/library/default.asp url=/library/en-us/directshow/htm/timeandclocksindirectshow.asp First, thank you. Yes, exactly. Where ...Show All

• moonriver Extract values from persisted workflow without instanciate it

  Hi there I'm trying to extract the initial parameters of a persisted workflow for comparison purposes, without the need to instantiate him. I'll try to explain it... I have a workflow that describes the life cycle of a customer inside a business home. When the customer arrive, they are admitted in the reception where a few personal information is gathered. A workflow is created for every one that is admitted. They pass through 3 different steps and talk to 3 different end users of the application until the workflow is finished. For every step I want the end user to have a display list of customers in list for that step by order they arrived. Throught SQLTrackingService I manage to track in what activity the workfl ...Show All

• ChandraP Increasingly unable to install apps on Vista

  I'm running Vista RTM x64 Ultimate with UAC. I right click on the install programs and do run as admin. The domain account i'm using is in the local admin group. This happens under the re-enabled disabled default admin account too. I'm getting these corruption errors on multiple computers allrunning Vista RTM (one is x64 and another is x86) These are two samples from Event Log. Help! Level Date and Time Source Event ID Task Category Error 11/30/2006 8:11 MsiInstaller 11335 None Product: J2SE Runtime Environment 5.0 Update 9 -- Error 1335.The cabinet file 'Data1.cab' required for this installation is corrupt and cannot be used. This could indicate a network error, an ...Show All

• biffpixel Tricky issue with DynamicUpdate please help!

  Suppose you have a Workflow with the following Structure. <SequentialActivity> ActivityA, ActivityB </SequentialActivity> if I change this using Dynamic update to look like <SequentialActivity><MyContainerActivity>ActivityA, ActivityB <MyContainerActivity></SequentialActivity>. Achieving this using DynamicUpdate API work BUT if ActivityA or ActivityB try to access variables defined in the Workflow (Workflow State) then the workflow-level variables are null. Very tricky problem. Could you please suggest how this could be solved e.g. if ActivityA (after the dynamic update) tries to do Console.WriteLine("Show Woklfow Counter Variable {0}", counter); I get counter = null . For sure the co ...Show All

• mtower Problems by defining parameters for the workflow

  Hi people, im new to the windows workflow foundation and i have some problems by doing the tutoirials of the handson lab. In the section part of the tutorial, the following is written: 1. In Visual Studio 2005 with the HelloWorldWorkflow project open, double click on the Workflow1.xoml file in Solution Explorer to open the Visual Studio workflow designer. 2. Right-click the workflow background in the Visual Studio workflow designer and choose properties to open the properties window. 3. Click on the Parameters property and click on the ellipses […] that appear. The problem is, in my propertie window there is no parameters property under activity. I only see Base Class, Description and Enabled a ...Show All

• kdancer100 Why doesn't ActivityTrackingRecord.ContextGuid match any context guids in the rootactivity?

  In my system, I need to track additional information about a workflow. I implemented a custom tracking service so when the a new activity tracking record is sent, I can inspect the activity type and determine what additional information can be tracked. My problem is finding the correct activity instance associated with the tracking record. When I try to find the instance based on the root activity, the qualified name, and context guid, I get nothing. The reason for this is the ContextGuid passed into the ActivityTrackingRecord does not match any guids returned from the Activity.ActivityContextGuid dependency property. I am using a simple sequential workflow. Any idea why this is   Nate Garvey w ...Show All

• nhaas Replicator with PolicyActivity hurts my brain

  Even after some help from a kind poster I'm still not getting how to use PolicyActivity within a replicator. I created a new activity derived from SequenceActivity. I added a property to it, with the DependencyProperty gunk around it like the SimpleReplicator SDK sample shows. This all initializes fine. My problem is now I drag a PolicyActivity into my Sequence. How can rules in this PolicyActivity use my custom property on the parent Sequence Activity I've tried GetActivityByName to get the sequence, but it doesn't appear I can cast in a rule condition (or I don't know the syntax) to my derived type to be able to access the property in say, a condition. Even if I could, this would not be a great way to write rules against that property. ...Show All

• Moonshadow Can't stop or start service from client app ("access is denied")

  Hi, Quick question for all you Vista gurus out there. We have a service (running as SYSTEM) and we need to be able to stop and start it from our client application, which is running as a standard user. Is this possible Our app was designed originally to run as administrator, but in order to get Vista certification we can't have it demand administrator access ( ) so I'm trying to get it to run with the "asInvoker" access instead. But when I do that it can't access the service via the ServiceController. When we call serviceController.Stop() we get "InvalidOperationException: cannot open service on computer '.' --> Win32Exception: access is denied". The "Stop()" method is calling the "GetServiceHand ...Show All

• Kris Selden Laptop close lid, and re open lid, Vista wont resume, screen is off/black

  I'm having a problem with Windows Vista Ultimate 64 bit edtion on my HP laptop, when i close the lid but i have set up what windows does when i close the laptop to do nothing, but when i close the lid, and re open it, the screen is off/black, cant shutdown it properly and must do hard reboot. Laptop is HP Pavillion dv9000nr AMD Turion 64x2 Nvidia GeForce GO 6150 1gb memory Sony VAIO AR320 Nvidia GeForce Go 7400 Vista Home Premium Downloaded all the updates for Vista from Windows Update, and same deal for updates from Sony. Close lid action set to do nothing, but upon opening lid again screen is blank/black. Computer is still running (you can hear music and instant messenger sounds and su ...Show All