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17 Articles match "Host","Workflow"

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SharePoint for Developers (WSSv3/MOSS2007)
client application may need to run off-host and communicate with the server via web services in order to complete required tasks. We explore the more powerful and common web services needed for building rich off-host applications that leverage SharePoint technologies. 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. We discover how to code more complex custom workflows. intranet?
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
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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27 Articles match "Host","Workflow"

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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. So we can have our workflow check if a callback address is passed and if not just skip the callback altogether.
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. So we can have our workflow check if a callback address is passed and if not just skip the callback altogether.
The Problem Solver - Tuesday, May 4, 2010
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Workflow 4 Services and duplex communications
But with a workflow service this doesn’t work because, without the ServiceContract attribute, there is no way to specify the CallbackContract. Yet workflows support duplex communications. Workflow Services and Durable Duplex. Instead of the normal WCF duplex services workflow services use a mechanism that is called durable duplex. Also settings a workflow, and the client, up for durable duplex takes a bit more configuring. Creating the Workflow Service. First step is to create the workflow service. Next we need to update the workflow itself.
The Problem Solver - Monday, May 3, 2010
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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. Both these properties point to ready to use WPF UIElement’s so, as long as the host used WPF, adding them to a form is easy. And loading or saving a workflow is easy to, all it takes is a Load() and Save() function pointing to a XAML file.
    The Problem Solver - Wednesday, December 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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  • Workflow 4 Services and duplex communications
    But with a workflow service this doesn’t work because, without the ServiceContract attribute, there is no way to specify the CallbackContract. Yet workflows support duplex communications. Workflow Services and Durable Duplex. Instead of the normal WCF duplex services workflow services use a mechanism that is called durable duplex. Also settings a workflow, and the client, up for durable duplex takes a bit more configuring. Creating the Workflow Service. First step is to create the workflow service. Next we need to update the workflow itself.
    The Problem Solver - Monday, May 3, 2010
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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. However sometimes we might need to do so ourselves because we create a workflow in a different way, like using regular code. How much varies and depends on both the workflow and the hosting environment we use. The obvious one is using the WorkflowApplication or WorkflowInvoker to run our workflows. Tags: NET Workflow WCF WF4 VS2010 Think about the Send and ReceiveReply activities. Enjoy!
    The Problem Solver - Wednesday, December 2, 2009
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  • Using Windows Workflow Foundation 4 Receive from an non WF client
    In a previous blog post I described how to use the WorkflowServiceHost and host a workflow with a Receive activity that waits for WCF messages. However a lot of clients out there are not going to be workflows but “regular” code that calls into out workflow. In our workflow the operation is named “Operation1” and our service contact name was “MyService” with the default namespace of “ [link] ”. Using these WCF definitions creating a simple console app that calls the workflow is a breeze. Tags: NET NetFx3 Workflow WCF WF4 VS2010 OperationContract].
    The Problem Solver - Wednesday, August 19, 2009
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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. This means that an exception that is unhandled which bubbles terminating the workflow up will not cause the finally block to execute unless the host application forces it to do so by returning UnhandledExceptionAction.Cancel from the OnUnhandledException instead of UnhandledExceptionAction.Terminate (the default). However where you normally would use the stack trace to see where the error occurred this is useless in Windows Workflow Foundation. Enjoy!
    The Problem Solver - Thursday, November 26, 2009
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  • What does Windows Workflow Foundation 4 mean for existing workflow developers?
    The question of what Windows Workflow Foundation version 4 means for developers currently developing using WF recently came up. In WF 3 there was a choice between state machine and sequential workflows. That said, a number of state machine workflows could very well be done using a flow chart. WF 4 ships with an interop activity you can use to host custom WF 3 activities in a WF 4 workflow. So there is no reason for existing workflow developers to panic just yet. Tags: NET NetFx3 Workflow DevCenter WF4 until the end of times? Enjoy!
    The Problem Solver - Friday, July 3, 2009
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