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Windows Workflow Foundation (WF) is a Microsoft technology that provides an API, an in-process workflow engine, and a rehostable designer to implement long-running processes as workflows within .NET applications. The latest version of WF was released as part of the
.NET Framework 3.0
/ref> and primarily uses the System.WorkflowActivities, System.Workflow.ComponentModel, and System.WorkflowRuntime namespaces. Workflows in version 3 were created using either the Sequential model (in which activities are executed in order, with the completion of one activity leading to the next), or the State Machine model (in which activities are executed in response to external events).
Windows Workflow Foundation (WF) is a Microsoft technology that provides an API, an in-process workflow engine, and a rehostable designer to implement long-running processes as workflows within .NET applications. The latest version of WF was released as part of the .NET Framework
The .NET Framework (pronounced as "''dot net"'') is a proprietary software framework developed by Microsoft that runs primarily on Microsoft Windows. It was the predominant implementation of the Common Language Infrastructure (CLI) until bein ...
version 4.5 and is referred to as (WF45).
A workflow, as defined here, is a series of distinct programming steps or phases. Each step is modeled in WF as an Activity. The .NET Framework provides a library of activities (such as WriteLine, an activity that writes text to the console or other form of output). Custom activities can also be developed for additional functionality. Activities can be assembled visually into workflows using the Workflow Designer, a design surface that runs within Visual Studio. The designer can also be hosted in other applications.
Encapsulating programming functionality into the activities allows the developer to create more manageable applications; each component of execution can be developed as a Common Language Runtime
The Common Language Runtime (CLR), the virtual machine component of Microsoft .NET Framework, manages the execution of .NET programs. Just-in-time compilation converts the managed code (compiled intermediate language code) into machine instructio ...
object whose execution will be managed by the workflow runtime.
Workflow Foundation versions
* Workflow Foundation was first released in Version 3 of the .NET Framework,/ref> and primarily uses the System.WorkflowActivities, System.Workflow.ComponentModel, and System.WorkflowRuntime namespaces. Workflows in version 3 were created using either the Sequential model (in which activities are executed in order, with the completion of one activity leading to the next), or the State Machine model (in which activities are executed in response to external events).
Microsoft SharePoint 2007
SharePoint is a web-based collaborative platform that integrates natively with Microsoft Office. Launched in 2001, SharePoint is primarily sold as a document management and storage system, but the product is highly configurable and its usage v ...
uses W