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Windows Workflow Foundation (WF) is a powerful platform for designing and running workflows — a central tenet in many business applications. WF was introduced with the .NET Framework 3.0 and was completely redesigned and rewritten for its .NET Framework 4.0 version to overcome some of the problems it had in its previous incarnations. This had the unfortunate side-effect of rendering .NET 4.0 workflows incompatible with workflows created in earlier versions, but leaving it a much more robust technology as a result. The version of WF included with Visual Studio 2015 includes a number of small, incremental changes in the designer and available templates, but nothing that rivals the difference between .NET 3.5 and 4.0. This chapter takes you through using the WF designer, and the process of creating and running workflows using WF.
Before discussing Windows Workflow, you should first examine exactly what workflow is. A workflow is essentially a model of the steps that form a business process. For example, this may ...