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19 Articles match "Activity","Workflow"

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SharePoint for Developers (WSSv3/MOSS2007)
Day 5 Out-of-the-Box Workflow Capabilities Many companies built custom code to handle common business workflow scenarios around the many document and form libraries introduced in the last version of Windows SharePoint Services. The WSS team realized the business requirement for easily building workflows. We learn to build sophisticated workflows using the out-of-the-box functionality in the new version of SharePoint. We discover how to code more complex custom workflows. We learn to take advantage of the power of VS 2005 to build workflow applications.
DevelopMentor Courses - Friday, June 12, 2009
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Essential Windows Workflow Foundation
Learn why Windows WF was created and discover how to support human and system activities by organizing them into workflows. Learn how to host Windows WF, create custom activities for Windows WF, and develop workflows in Windows WF. You'll get answers to these questions: How can I use workflows to map out processes? What is the best way to host a workflow? What are the best practices for customizing my workflows? How can I create extremely rich workflow authoring experiences? Basic Workflow Hosting One of Windows WF?s how to use it?
DevelopMentor Courses - Friday, June 12, 2009
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Essential Windows Workflow Foundation 4 - WF4
Gain understanding of the strengths and weaknesses of Windows Workflow Foundation 4. Understand how workflow activities work and what their role is. Discover what part of your application is best suited to use Windows Workflow Foundation and why. Learn how you can empower your end users to create new, or change existing, workflows to adapt to the changing business environment. Understand what the best way is to host your workflows in the various execution environments.NET is found. Find out how your workflows can interact with other business processes.
DevelopMentor Courses - Tuesday, November 17, 2009
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59 Articles match "Activity","Workflow"

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Workflows and no persist zones
There are times when a workflow can't be persisted safely using a SqlWorkflowInstanceStore. The reason isn't so much saving the state of a workflow to disk, that could be done at any time, but the result when a workflow would be reloaded from disk in that state. An easy example is a workflow handling a WCF request with a Receive and SendReply activity pair. Suppose you would save the workflow state after the message had been received but before the response had been send. The first action of the reloaded workflow would be to send the response again.
The Problem Solver - Sunday, August 22, 2010
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More Workflow 4 Services and duplex communications
Yesterday I posted a long blog post explaining how to do duplex communications in a Workflow service. Its a long story but the most important points where that workflow services don’t support the same style duplex communication as WCF with the callback channel defined in the ServiceContract but rather something that is called durable duplex where the callback contract is independent and the client has to create a ServiceHost and act as a full-blown WCF service. And the Send activity has the capability to set the callback address dynamically using the EndpointAddress property.
The Problem Solver - Tuesday, May 4, 2010
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More Workflow 4 Services and duplex communications
Yesterday I posted a long blog post explaining how to do duplex communications in a Workflow service. Its a long story but the most important points where that workflow services don’t support the same style duplex communication as WCF with the callback channel defined in the ServiceContract but rather something that is called durable duplex where the callback contract is independent and the client has to create a ServiceHost and act as a full-blown WCF service. Remove this from the variables, the Receive CorrelationInitializers and the Send activity CorrelatesWith.
The Problem Solver - Tuesday, May 4, 2010
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  • TryCatch activity in WF4
    I can’t say I am a fan of the way the TryCatch activity is implemented in Windows Workflow Foundation 4. For starters there is a Finally block where you can add some activities you want to execute. With WF4 this is not the case though The finally activity will only execute if the try block or one of the catch blocks completes. subtle difference and one that is likely to bite people because the normal code path is usually to have the try activity to complete normally. Tags: NET Workflow WF4 VS2010 Except that it behaves in a subtlety different way.
    The Problem Solver - Thursday, November 26, 2009
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  • Rehosting the Workflow Designer in WF4
    Beta 2 With Windows Workflow Foundation 3 it was possible to rehost the workflow designer in your own application. With Windows Workflow Foundation 4 live has become much better on the rehosting front In fact it is possible to create the fully functional and useful workflow editor below in about 200 lines of code. And loading or saving a workflow is easy to, all it takes is a Load() and Save() function pointing to a XAML file. One thing that is needed is to register the workflow activity designer metadata. Validating the workflow. Sweet.
    The Problem Solver - Wednesday, December 23, 2009
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  • Activity correlation in Windows Workflow Foundation 4
    There are two types of correlation to think about in Windows Workflow Foundation: Message correlation Basically sending multiple requests to the same workflow. Activity correlation Making sure two activities work together. In this post I am going to show activity correlation Activity correlation is used when multiple activities form a single logical action. Think about the Send and ReceiveReply activities. However sometimes we might need to do so ourselves because we create a workflow in a different way, like using regular code.
    The Problem Solver - Wednesday, December 2, 2009
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  • Getting started with Windows Workflow Foundation 4
    As you may have heard Windows Workflow Foundation 4 is not an upgrade from Windows Workflow Foundation 3 (or 3.5). In fact Windows Workflow Foundation 3 was the first version and 3.5 That might be a bit surprising, after all we still have activities and a workflow runtime right? Creating workflows is done by creating a WorkflowInstance object. This object is raises events for that workflow and only for that specific workflow. But surely there is still an Activity base class? The latter contains the workflow. Yes there is.
    The Problem Solver - Monday, June 22, 2009
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  • The new Windows Workflow Foundation 4 runtime
    With WF3 there was a central workflow runtime environment called the WorkflowRuntime and used to manage the lifetime of workflow instances. In WF4 this central class no longer exists and we manage individual workflows. It basically runs a workflow and prints a message when done: static void Main( string [] args). {. Console.WriteLine( "The workflow has completed." Console.WriteLine( "The workflow has completed." quot; ); }; myInstance.Run(); Console.WriteLine( "Waiting for the workflow to complete." Nice right!
    The Problem Solver - Tuesday, June 23, 2009
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  • Windows Workflow Foundation 4 and persistence
    The persistence class out of the box is called SqlWorkflowInstanceStore and as the name suggests it saves workflow data in either SQL Server 2005 or 2008. We can attach it to either a WorkflowApplication or a WorkflowServiceHost and persist workflows when we want. This can be used to run only short lived workflows and doesn’t support persistence. var instanceStore = new SqlWorkflowInstanceStore(connStr); WorkflowApplication app = new WorkflowApplication(workflow); app.InstanceStore = instanceStore; app.Run(); Okay its a little more involved then that. Enjoy!
    The Problem Solver - Thursday, November 19, 2009
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  • Flowcharts in Workflow 4 and the Switch activity
    Flowcharts are a nice addition to Windows Workflow Foundation 4. They allow for a lot of pretty complex behavior that is hard to do in a sequential workflow. In WF 3 we used to model these complex behaviors as state machine workflows. Enter the flowchart in Windows Workflow Foundation 4 One of the good things is that a flowchart is not another workflow type. No it is just another activity to drop in a workflow. So you are free to combine sequential work with a flowchart in one workflow. Tags: NET Workflow WF4 VS2010 So far so good.
    The Problem Solver - Tuesday, October 27, 2009
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