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Getting and Setting Workflow Variables from a Custom Activity, Windows Workflow Foundation  Version: 0.00     Price: $0.00  
Total Hits: 50  |  Today: 0Author: Jeff W Welch      Rating:  
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When building workflows, you inevitably get into a situation where the standard activities just don't cut it. In that case, you'll create a custom activity to do whatever intricate business logic you need. In the process of creating an activity of this nature, you'll add some properties, Dependency Properties, that allow the workflow to pass data to the activity. So what if you want to go in the opposite direction? How do you read or change the value of a workflow variable? Well these two method...

Host and Workflow: Two Worlds to Communicate: Part I  Version: 0.00     Price: $0.00  
Total Hits: 17  |  Today: 0Author: freedeveloper      Rating:  
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The intercommunication between a Workflow and the Host application is not a trivial thing to implement because the host and the workflow run in different threads. Microsoft has developed a communication structure that simplifies the problem. It creates a special methodology and class to handle the communication....

Make type-casting inside a workflow easier with TypeCastActivity  Version: 0.00     Price: $0.00  
Total Hits: 19  |  Today: 0Author: Edmundas Kevisas      Rating:  
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While doing some research on Windows Workflow Foundation, I came across a single lack of functionality that I really missed in my projects. That was object down-casting functionality in workflow binding architecture.

Consider an example: I have a custom activity (call it LoadDataActivity) to load some data objects using API. Loaded object reference is stored in LoadDataActivity.Data property, which is of type Object, as I assume I don't know objects of what type can be loaded....

Host and Workflow: Two Worlds to Communicate - Part II  Version: 0.00     Price: $0.00  
Total Hits: 10  |  Today: 0Author: freedeveloper      Rating:  
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This is the second of five articles about Host Workflow communication.

In this series of articles, I will try to show the different possibilities to implement communication, from the simplest case to the more complex. I am not planning to be exhaustive, but I will try to give a general panoramic in order to get us a good idea about the thematic....

Call Control Implmentation Using the Windows Workflow Foundation  Version: 0.00     Price: $0.00  
Total Hits: 25  |  Today: 0Author: HirenSuchak      Rating:  
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This article describes the design of a Call Control mechanism for any Telephony application that uses TAPI as its base framework. This article doesn't make use of any TAPI but provides a generic call control mechanism that can be hooked to any PBX or Call based system....

Workflow Foundation 4.0 - Persistence  Version: 0.00     Price: $0.00  
Total Hits: 25  |  Today: 0Author: Ambily.raj      Rating:  
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Persistence means storing the current state of a workflow. For better understanding, we will consider a document processing scenario.

In document processing, one user uploads the document and the workflow gets started. Then the document will go to the reviewer. Reviewer will review the document, either accepts it or reject with comments. In this scenario, reviewing of the document can happen in a different application or can be done after many months....

Workflow Foundation 4.0 - Activity Designer  Version: 0.00     Price: $0.00  
Total Hits: 16  |  Today: 0Author: Ambily.raj      Rating:  
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Visual Studio 2010 released with workflow foundation 4.0. Workflow Foundation 4.0 is introduced a significant amount of change from the previous versions of the technology. The change varies from the core of the workflow foundation, runtime and tools. Workflow foundation 4.0 re-architected to improve the performance and productivity of the WF....

State Machine Work flow Discussion  Version: 0.00     Price: $0.00  
Total Hits: 50  |  Today: 0Author: Questpond      Rating:  
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This is a nice talk between Mr. RC and Mr. Shiv about state machine work flow. RC starts talking about an order project and they end up in a nice discussion which gives us step by step approach of how to execute a state machine work flow.

This article was written in a straight half & hour session so please excuse for my English as it’s my second language and for any spelling mistakes….so guys enjoy State machines....

Windows Workflow Foundation - FAQ  Version: 0.00     Price: $0.00  
Total Hits: 29  |  Today: 0Author: Questpond      Rating:  
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In this FAQ we will quickly run through and get a feel of how WWF (Windows Workflow foundation) will help you in making custom work flows in your project.
In case you like the article or your think I need improvements please send me a message at http://www.questpond.com . I am sure every one needs improvements. Enjoy…...

Introduction to Windows Workflow Foundation Part 1  Version: 0.00     Price: $0.00  
Total Hits: 19  |  Today: 0Author: AzamSharp      Rating:  
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Windows Workflow Foundation is part of the .NET 3.0 framework. Windows Workflow (WF) allows the developer to create workflow enabled applications. This is the first part of the Introduction to Workflow series. In the first part I will discuss how to create simple Workflow application and custom activities....

Windows Workflow Foundation  Version: 0.00     Price: $0.00  
Total Hits: 31  |  Today: 0Author: Dino Esposito      Rating:  
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In the January 2006 issue, Don Box and Dharma Shukla introduced Windows® Workflow Foundation and discussed the overall architecture of the framework and its constituent components ( WinFX Workflow: Simplify Development With The Declarative Model Of Windows Workflow Foundation). It inspired me to take this topic one step further and discuss how you can use Windows Workflow Foundation to address a common business scenario where automatic processes intersect with human activity. It provides a fram...

A Tour of Windows Workflow Activities  Version: 0.00     Price: $0.00  
Total Hits: 18  |  Today: 0Author: Dino Esposito      Rating:  
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Most enterprise applications contain business processes that developers and architects find natural to express through workflows. Ultimately, a workflow is a program that captures the interactions among real-world entities. The workflow waits for stimulus from the external world, and the arrival of that stimulus could take arbitrarily long periods of time....

Building State Machines with Windows Workflow Foundation  Version: 0.00     Price: $0.00  
Total Hits: 31  |  Today: 0Author: Keith Pijanowski      Rating:  
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The Microsoft® .NET Framework 3.0 introduced new capabilities for visually and declaratively building workflows that can be hosted by managed code. Out of the box, the .NET Framework 3.0 allows developers to build both sequential workflows and state machine workflows. Much has been written about sequential workflows because they closely resemble conventional programming techniques....

Voice Response Workflows with Speech Server 2007  Version: 0.00     Price: $0.00  
Total Hits: 25  |  Today: 0Author: Michael Dunn      Rating:  
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Embedded presence, instant messaging (IM), audio and video conferencing, and telephony are among the unified communications features offered by Microsoft® Office Communications Server (OCS) 2007. Developers can build on an array of OCS APIs to include these and other features in their own applications. But OCS 2007 adds one new developer-centric feature you may not have heard about yet—interactive voice response (IVR) workflows based on the Microsoft Speech Server platform....

WCF And WF Services In The .NET Framework 4.0 And “Dublin”  Version: 0.00     Price: $0.00  
Total Hits: 19  |  Today: 0Author: Aaron Skonnard      Rating:  
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At the Professional Developer's Conference (PDC) in October 2008, Microsoft released the details around numerous improvements that will ship in the Microsoft .NET Framework 4.0, specifically in the areas of Windows Communication Foundation (WCF) and Windows Workflow Foundation (WF). Microsoft also debuted some extensions to Windows Server—code-named "Dublin"—that provide an improved hosting and management experience for WCF and WF applications....

Error Handling In Workflows  Version: 0.00     Price: $0.00  
Total Hits: 26  |  Today: 0Author: Matt Milner      Rating:  
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Windows Workflow Foundation (WF) provides the tools to define rich business processes and a runtime environment to execute and manage those processes. In any business process, exceptions to the expected flow of execution occur, and developers need to be able to write robust application logic to recover from those exceptions. Most samples of any technology tend to overlook fault handling and proper recovery. In this month's installment, I will show you how to handle exceptions properly at several...

ASP.NET WorkFlow with parameters  Version: 0.00     Price: $0.00  
Total Hits: 24  |  Today: 0Author: matiaszumbo      Rating:  
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Simple Web Site ASP.NET using Microsoft Worflow Fundation. Parameters - Web Page - WorfFlow....

StateMachineWorkflowInstance Class  Version: 0.00     Price: $0.00  
Total Hits: 25  |  Today: 0Author: Microsoft Corporation      Rating:  
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Represents a class that manages the current instance of a StateMachineWorkflowActivity. This class cannot be inherited....

WorkflowRoleCollection Class  Version: 0.00     Price: $0.00  
Total Hits: 28  |  Today: 0Author: Microsoft Corporation      Rating:  
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Represents a collection of WorkflowRole objects. This class cannot be inherited....

CancellationHandlerActivity Class  Version: 0.00     Price: $0.00  
Total Hits: 8  |  Today: 0Author: Microsoft Corporation      Rating:  
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Represents cancellation logic that can be associated with a CompositeActivity. This class cannot be inherited....


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