Search results matching tag 'WF'

Dyamic loading of Workflows using InvokeWorkflow?

PaulAik — Wed, 01 Jul 2009 04:00:00 GMT

Hi,

I'm currently doing a little investigation into WF to find out if it's viable for a project I'm looking to build. I've got the following scenario in my head, do any of you guys know if it's possible with WF?

Scenario -

a) The user enters a 'visit code' against a client visit that has been cancelled/has some special event happen (e.g. visit not possible due to X).

b) The visit info is sent to WF. A main workflow loop reads the Visit Code and starts a workflow to deal with the business rule (via InvokeWorkflow?) - the main workflow has knowledge of all of the visit codes (a big if/else branch?)

c) A new workflow is spawned to deal with the visit/visit code, the main WorkFlow continues indefinitely waiting for new visits.

All of that sounds feasible, however I'd like to know if it would be possible to do the following:

- Allow users of the system to dynamically create new/change Workflows to deal with new business rules (via a Workflow Manager util?), which are then persisted to the Workflow Database.

- Be able to add these new codes into the main Workflow loop so they'd be caught and processed (e.g. add another branch to the main loop containing another InvokeWorkflow)

Is this possible? Or am I looking for too much...!

Cheers,

Paul

WorkflowComplete Event Never Fired

RicardoPeres — Thu, 16 Apr 2009 04:00:00 GMT

Hi, I have a situation where I am starting a workflow, everything works fine, however, the WorkflowComplete event is never fired, neither the WorkflowTerminated, WorkflowAborted or ServicesExceptionNotHandled; simply, the workflow ends, and the the last event fired is the WorkflowIdled. I am storing the WorkflowRuntime in the Application, and I am using a ManualWorkflowSchedulerService. If anyone is willing to help, I can post the code. Any ideas? Thanks in advance! Ricardo Peres

Create Dynamic WorkFlow

marzieh309 — Mon, 06 Oct 2008 04:00:00 GMT

hi, i want programing project that can generate workflow dynamic at runtime such as sharepoint workflow . in fact i have to write ge generator for workflow that end user can make thier workflow , i dont want use office shareopoint workflow but i want design generetor such as it.

please help me how can i do it?

Re: New-Mailbox Issues

loxschpen — Wed, 27 Aug 2008 04:00:00 GMT

Well I have good news and bad news for you.

First the bad: the fact of it all is that you CANNOT run the Exchange Management Shell from ANY ASP>NET application. Why is this you ask? Well our friends over at Microsoft have taken the ability to impersonate out of their new environment. I know I am in the same boat as you as I automated 3 companies with wonderful web services for Exchange 2000 and 2003 using CDOEXM....

SO what is the good new? Well its this, you can run your scripts under a NON impersonated account. So what I did was create a new service account for Exchange 2007 and then tested to made sure it worked. Now that I had that account I created a new WCF Workflow library in VS2008. Once I did that I was able to install it in IIS 7 and run the WF as my new service account.

We can now get to work by taking an interface application via the web into our new WCF Workflow. Not only does the workflow make things nice and easy on programming, but custom error handling and even rollbacks are done for me. Now if something fails, I notify the user via an AJAX panel of the status of the job and dont let them submit the same one again until the issiues are fixed. This allowed me to teach the WF all about how to solve certain error codes making my applications moron proof.

I am writing an article for the Code Project and DevX on it and I will have it posted out soon. Let me know if this helps you or what other direction you have gone down.

Regards,

Timothy

Re: New to WCF and WWF...Plz Help

rehankhan — Wed, 30 Jul 2008 04:00:00 GMT

I have collected some links for my self learning. You can go through that and will definetly help you in learning WWF

http://www.developer.com/net/net/article.php/3627266

http://dotnet.sys-con.com/read/163734.htm

Hope this will help you in understanding basics of WWF.

Bye
Rehan Mustafa Khan

Workflow: Create an application to create workflows

status_quo — Thu, 05 Jun 2008 04:00:00 GMT

Hello people.

First, forgive me if my terminology is incorrect. This is day one for me on WF.

Am wondering if its possible to create an application that will let me create my own workflow processes....

like this:

Think for example an accounting software; i could design a workflow for orders and other for receipts and yet another for inventory control...But then, i would like to host them inside an application so that a user can later decide to create/edit/copy( and the like) those previously created processes/workflows.

All the processes/workflows are to be composed of a data storage element, a users element, a role element, an action element and the conencting arrows.

This looks fuzzy even to me, but if you can help me somehow...

What technology or programming language is this?

hsl001 — Fri, 15 Feb 2008 05:00:00 GMT

Hi All,

I came across a website and use web and winforms menu system together. I tried to right click on the menu items to view the codes but it was not available. Can someone explain what technology that they use and how would one go about doing it? Is it WPF, Silverlight or something else.

sorry it's not www.logmein.com , try http://dovico.com/

TIA

Cheers!

Re: Help....

XML@asp — Thu, 24 Jan 2008 05:00:00 GMT

thanks for the idea parsons. How do i get the value of

//Get the Response
HttpWebResponse response = request.GetResponse();
System.IO.StringReader sr = new System.IO.StringReader(response.GetResponseStream());
string result = sr.ReadToEnd();

how do i get the value of the response???

please help. i am using the vb.net thanks. I translate it in vb.net but how do i get the value in the response.. for example the state or address???

thanks..

Workflow Runtime Problem

Sohnee — Fri, 04 Jan 2008 05:00:00 GMT

I am getting the following error when I try to run a WF and WCF service:

System.IO.FileNotFoundException: Could not load file or assembly 'System.Workflow.Runtime' or one of its dependencies. The system cannot find the file specified.
File name: 'System.Workflow.Runtime'

Server stack trace: 
   at System.RuntimeTypeHandle._GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName)
   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
   at System.RuntimeType.PrivateGetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
   at System.Type.GetType(String typeName, Boolean throwOnError)
   at System.Workflow.Runtime.WorkflowRuntime.AddServiceFromSettings(WorkflowRuntimeServiceElement serviceSettings)
   at System.Workflow.Runtime.WorkflowRuntime.PrivateInitialize(WorkflowRuntimeSection settings)
   at System.Workflow.Runtime.WorkflowRuntime..ctor(WorkflowRuntimeSection settings)
   at System.ServiceModel.Configuration.WorkflowRuntimeElement.CreateBehavior()
   at System.ServiceModel.Description.ConfigLoader.LoadBehaviors[T](ServiceModelExtensionCollectionElement`1 behaviorElement, KeyedByTypeCollection`1 behaviors, Boolean commonBehaviors)
   at System.ServiceModel.Description.ConfigLoader.LoadServiceDescription(ServiceHostBase host, ServiceDescription description, ServiceElement serviceElement, Action`1 addBaseAddress)
   at System.ServiceModel.ServiceHostBase.ApplyConfiguration()
   at System.ServiceModel.ServiceHostBase.InitializeDescription(UriSchemeKeyedCollection baseAddresses)
   at System.ServiceModel.WorkflowServiceHost.InitializeDescription(WorkflowDefinitionContext workflowDefinitionContext, UriSchemeKeyedCollection baseAddresses)
   at System.ServiceModel.WorkflowServiceHost..ctor(Type workflowType, Uri[] baseAddress)
   at Microsoft.Tools.Common.ServiceReflectionUtility.TryCreateWorkflowServiceHost(Type type)
   at Microsoft.Tools.Common.ServiceReflectionUtility.IsWFServiceClass(Type type)
   at Microsoft.Tools.SvcHost.ServiceHostHelper.CheckServiceKind(Type type)
   at Microsoft.Tools.SvcHost.ServiceHostHelper.LoadServiceAssembly(String svcAssemblyPath)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Microsoft.Tools.SvcHost.ServiceHostHelper.LoadServiceAssembly(String svcAssemblyPath)
   at Microsoft.Tools.SvcHost.CrossAppDomainSvcHost..ctor(String svcAssemblyPath, String svcConfigPath)

I have attempted to add persistence / tracking to the Workflow, which is what has caused the error - here is the config changes:

    <behaviors>
      <serviceBehaviors>
        <behavior name="ProcessToDoWorkflow.Behavior"  >
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
          <serviceCredentials>
            <windowsAuthentication
                allowAnonymousLogons="false"
                includeWindowsGroups="true" />
          </serviceCredentials>
          <workflowRuntime name="ProcessToDoWorkflowRuntime" validateOnCreate="true" enablePerformanceCounters="true">
            <services>
              <add type="System.Workflow.Runtime.Hosting.ManualWorkflowSchedulerService, System.Workflow.Runtime,
                Version=3.0.00000.0, Culture=neutral,
                PublicKeyToken=31bf3856ad364e35" />
              <add type="System.Workflow.Runtime.Hosting.SqlWorkflowPersistenceService, System.Workflow.Runtime,
                Version=3.0.00000.0, Culture=neutral,
                PublicKeyToken=31bf3856ad364e35"
                   connectionString="Data Source=localhost;Initial Catalog=Persistence;Integrated Security=True"
                   LoadIntervalSeconds="1"
                   UnLoadOnIdle="true" />
              <add type="System.Workflow.Runtime.Tracking.SqlTrackingService, System.Workflow.Runtime, 
                Version=3.0.00000.0, Culture=neutral, 
                PublicKeyToken=31bf3856ad364e35"
                  connectionString="Data Source=localhost;Initial Catalog=Tracking;Integrated Security=True"/>
              <add type="System.Workflow.Runtime.Hosting.DefaultWorkflowTransactionService, System.Workflow.Runtime" />
            </services>
          </workflowRuntime>
          </behavior>
      </serviceBehaviors>
    </behaviors>

Any help would be much appreciated.

WF Workflow SqlWorkflowPersistenceService

Sohnee — Thu, 20 Dec 2007 05:00:00 GMT

Hi there,

I'm using the 3.5 framework's Receive Activity with "CanCreateInstance" set to true. I would love to add persistence to this, but as the instances are being managed internally by the framework, I can't find a handle to add the SqlWorkflowPersistenceService.

I've made the config changes and created the database and I can add persistence to the "old" style 3.0 framework (where you created the instances manually) - but where I'm not manually creating WorkflowInstance myInstance, I don't have the "myInstance" to add to?

Any suggestions would be greatly appreciated.

Cheers