2010 Beijing TechEd on December 1st, National Conference Center in Beijing, predictable, until December 3, this festival a lot of technical people dreaming of coming to an end, but it seems that the enthusiasm did not see the whole hall weakening trend, IT168 will take TechEd you continue to follow the latest technical information. Session 3 in the morning, the Microsoft China project manager for the presence of technical personnel to bring the workflow WF4 on course - "Using WF4 implement your processes, the Windows Server AppFabric, in the cloud." In his course to introduce the concept of the WF4, WF4 application scenarios, the next generation of workflow, at the same time, Microsoft's test engineer Wang was related presentations, including how to apply resources to create a work flow, how to work flow deployed to the local and clouds. Three elements of the workflow WF4 WF stands for Windows Workflow Foundation, has three elements: activities, runtime and tools. Activities: describes the business logic in the use of the process, every step of the operation need to design a task, which is activity, activity is the basic unit of the workflow. Runtime: Workflow defined the need to run after, in addition to run outside, run-time but also monitoring. Tools: Workflow need a good tool to create workflow processes can be created using graphical workflow. Yang Guang pointed out that the work flow for three main scenarios: first, the task is suitable for long-running workflow, Yang said that all people are basically involved in a long process, such as the approval, accreditation, etc.; second, two times for use of custom workflow processes, very often people are not running workflow developers, first they did not know the code, and each company's processes are not the same, if you want to provide a workflow system to enable them to use, need to provide a template, so that they can develop their own, so the workflow is very convenient; third scene is the coordination of complex business logic, many systems are not single, but very complex, you can use to describe the integration of workflow process, so that you can focus on the work of the core module. Prediction the next generation of workflow At the end of the course, Yang revealed to the audience present at the next generation of new features WF4, he said that 90% of the cases may be, these new features will be realized. The tool, the next generation will support C # WF4 expression, not limited to VB, which makes many of the technical staff crazy. Also increases notes, search, browse mode, tree, marquee, automatic connection and other functions. The most important is that, WF4 WF3.5 the state machine to remove the function, but many customers believe that the state machine is very helpful, Yang said that in the next generation of workflow will increase the state machine, and will provide the version number support.

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