workflow-foundation

workflow rules

Is there any good sample code or tutorial which explains how to use IRuleExpression in a custom rule editor ( windows workflow Rules Editor ) ? ...

Drools.NET vs Windows Workflow Foundation (WF)

I am currently in the process of searching for a rules engine that works in .NET. Our logic is pretty simple, +, -, *, /, and, or, basic order of operations stuff. However we are going to need to store this information in the database and then generate the rules file when a new version is pulled from the database. So the common UI edi...

Workflow Tools Comparison?

There is a pretty strong need for us to design some workflows around various processes. The problem is none of us actually know any workflow technology yet, and finding good data to compare the available options has been tedious and not entirely fruitful. So I figured I'd ask you guys. The main technologies we are looking at are Windo...

Windows Workflow tracking profile update?

I am building a application that uses Workflow Foundation (WF). For various reasons I have to use a custom tracking profile that I generate programmatically by using the following method: Instantiate the workflow. Retrieve the corresponding tracking profile. Test whether the tracking profile is up to date (I use a version number for th...

COMException: The data area passed to a system call is too small

The message defined in the title of this post, along with the HResult 0x8007007A occasionally occurs while creating an instance of a Windows Workflow Foundation Runtime. The error text is pretty self explanitory, and using Reflector over the Workflow Foundation assemblies I have narrowed down the problem to one of the following calls in...

(WF) workflow design patterns .net 3.0

I have some workflow to work with in Worflow foundation. I need to follow some workflow design patterns Some best performances in workflow ...

Windows Workflow Foundation, Exceptions and retry's?

Hi Folks, I have a sequential workflow with a number of Activities. One of these activities needs to access my paid S3 account. It works fine, but to be cautious, I would like to make sure it can handle unexpected situations, such as 'Host not found' or some timeout, etc. So .. i would normally put the code inside a TRY / CATCH. That's...

Is it possible to export a WF diagram to visio?

I would like to be able to export my WF diagram from visual studio 2008 into Visio so I can better show it to non-programmers. Dose anyone know if its possible? I haven't come across any mention of it before, and I don't see anything that jumps out at me from VS. [EDIT: WF = Windows Workflow Foundation] ...

WF ThrowActivities and custom error messages?

Hi folks, is it possible to throw a custom error message to a ThrowActivity, in windows workflow foundation? eg. Imagine i want to throw this exception, in my WF :- CutomException("This is my custom error message", myNumber, myObect); cheers :) ...

InvokeWorkflow activity inside a replicator activity

I have an invokeworkflow activity inside a replicator activity. The workflow that I'm trying to invoke requires 2 parameters to be passed to it, an integer and a string parameters, and these should be passed to the workflow by the replicator activity. Any ideas on how this could be done? Thanks. ...

thread safety of ManualWorkflowSchedulerService.RunWorkflow

I was wonder about the proper usage of ManualWorkflowSchedulerService.RunWorkflow(). Do I need to synchronize calls to the same workflowInstanceId across threads when I call ManualWorkflowSchedulerService.RunWorkflow? ...

Assigning multiple users to a workflow task in sharepoint

Has anyone able to assign multiple users to a sharepoint workflow task using the CreateTask activity? ...

Is it possible to use workflow parameters with workflows hosted by WorkflowServiceHost?

Normally, the method of passing workflow parameters to the workflow happens in the call to RunWorkflow. However, with the WorkflowServiceHost, there is no such method call involved. You simply call the Open() method on the instance. Any ideas? Of course, the implication is that I add more parameters to the service contract, but these...

How to create and require completion of a subset of several tasks Workflow Foundation?

I have a process that requires approval from any two out of a group of four or five people. I'd like to create a task assigned to each person, and after two of those tasks are complete, delete the remaining tasks and move on with the workflow. Is there a way to create multiple tasks with a single CreateTask activity? Also, I'm still fai...

ASP.NET and Windows Workflow's (WF) - do we need to stick it in the Application state?

I've been trying to use WF in my ASP.NET application (actually, it's ASP.NET MVC .. but the fact that it's MVC instead of WebForms should not matter at all). Now, i can run the WF and it works fine, etc.. but it kicks off ASYNCRONOUSLY, so any results from the WF (good or bad) get lost page life cycle. So .. after crying like an emo fo...

WF project: express edition

Is there a visual studio express edition to develop WF applications? ...

Workflow - choosing the appropriate host environment

The application that I'm designing will retrieve and store content from a variety of disparate sources on a schedule. In some cases, the content will be retrieved based on a time interval (think stock quotes), and in other cases the content will be retrieved based on a custom schedule (MWF @ 2pm). Many of the processes lend themselves ...

Terminate and Suspend activity in Windows workflow Foundation

I need to stop the execution Is there any procedures for using terminate and suspend activity ...

ASP.NET - best queue system for a new application

My organization is getting ready to implement a new system, which is a asp.net application. The application will have a large queue of offline work that is initiated by the website. This queue will hold different types of activity, ideally in XML messages. Think of things like email notifications, scheduled tasks, etc. In the past, t...

Please confirm: Is Windows Workflow Foundation a good horse to be backing right now?

We are in the process of selecting a workflow solution for a company that uses Microsoft products end to end. Given the news on WF4, in that it seems to be essentially a rewrite of previous versions, is it a wise move to back the current version or should we be looking elsewhere? Ie - is the current version so bad that we would not be w...