workflow-foundation-4

Does anyone know if it's possible to host a self-hosted WorkflowServiceHost application in IIS without turning it into a XAMLX file? If so, how? Furthermore, does anyone have any good guidelines for deploying XAMLX files in general to IIS 7? Thanks in advance You can do the same basic thing by writing your own hosting engine instead of the XAMLX one. You can then load applications via ASP.NET, but have complete control on it's lifespan/lifecycle. You have to create your own host to load the .XAML workflows into something like a WorkflowApplication and manage the lifespan of that workflow. It

I have a scenario and want to use multiple ReceiveAndSendReply activities running in parallel situation, each of them will be put in an infinite while loop to make sure all activities are always running and listening. So I used a parallel activity to pack all those ReceiveAndSendReply, and each ReceiveAndSendReply was put in a While activity with condition set to true. And of cause, I put some activities with business logic between Receive activity and SendReplyToRecieve activity. Now I have a problem if it takes a long time to process a request in one branch, then during that time all other

I have a WF4 service that emulates a sales funnel. It works by starting with a "Registration" receive call. After that, there are 10 similar stages (comprised of a 2 receives at each stage). You can't advance past a stage until after the current stage validates the data received. What I'm unsure about though is, even though my client app wouldn't allow for it, how can I make my workflow prevent anyone from calling the receive operations out of order? In my test console app, I let the user call any receive operation (just because I wanted to see what happens). For example, if I call the

My team has been tasked with designing a web application that is workflow driven. I need some advice regarding the design. The workflows need to be dynamic. Meaning, users can define the workflows through some interface and apply those workflows to a given scenario (The definitions will live in a SQL 2008 Database). The scenarios are defined by the business and will never change. So there may be only 2 types of scenarios a workflow can be defined for. The workflows are not necessarily linear. Some sort of state will drive the workflow. States will also be dynamic, but only exist in a workflow.

Hi all i have a problem while adding a custom behavior to a WorkflowServiceHost. Here is my WorflowServiceHostFactory: public class ScoringWorkflowServiceHostFactory : WorkflowServiceHostFactory, IServiceHost<IKernel> { private static IKernel _InjectionInstance; public IKernel InjectionInstance { get { return _InjectionInstance ?? (_InjectionInstance = new StandardKernel(new ScoringWorkflowServicesNinjectModule(Scope))); } } public object Scope { get { return Guid.NewGuid(); } } public override ServiceHostBase CreateServiceHost(string constructorString, Uri[] baseAddresses) { String

I am trying to create a simple WF4 activity that accepts a string that contains a VB.NET expression (from say the database), evaluates that string using the variables available in the current scope of the workflow and returns the result. Unfortunately, with the ways I've tried it, whether it be with a plain on Activity or a full-fledged NativeActivity , I keep hitting a wall. My first attempt was with a simple Activity, and I was able to make a simple class that evaluates an expression given some object as its input: public class Eval<T, TResult> : Activity<TResult> { [RequiredArgument] public

I have a win service hosting a few workflows (a WorkflowApplication and a WorkflowServiceHost) that I need to keep long running. Because OnStart() requires that it completes and returns to the OS, I have a main method that fires on another thread in a threadpool. My Onstart() mainly looks like this protected override void OnStart(string[] args) { eventLog.WriteEntry("Service starting..."); ThreadPool.QueueUserWorkItem(new WaitCallback(ServiceMainThread)); Thread.Sleep(100); eventLogCms.WriteEntry("Service Started."); } ServiceMainThread() is the method where my workflows execute and core

I am having problems getting validation to work properly in the designer for my custom activity. The simplest sample to reproduce the behavior is as follows: I have a custom WF4 activity with a dynamic collection of arguments stored in a dictionary: [Designer(typeof(DictionaryActivityDesigner))] public class DictionaryActivity : NativeActivity { [Browsable(false)] public Dictionary<string, InArgument> Arguments { get; set; } public InArgument<string> StringArg { get; set; } public DictionaryActivity() { Arguments = new Dictionary<string, InArgument>(); } protected override void Execute