Citrus Grandis(L.) Osbeck.'s Plantation And Pollution-free Expert System On ASP.NET

The software engineering of the computer push the change of information-based society process, the field of expert system is to weed out the old and bring forth the new constantly too. Behind Microsoft .NET platform, its ASP.NET has unfolded a kind of trend led to the world. Compared with the situation that past Web develops technology, ASP.NET has " incidents - drive the programming model", abundant state management is supported and because of such characteristics as .NET, etc, there are impassable advantages in security , performance. This expert system uses and faces target's design philosophy synthetically. ADO.NET technology is developed, the better one has met dependability, the stability is reusable. Combination with ASP.NET and SQL Server2000, it can't merely offer the enterprise layer data to visit , can utilize the systematic core to construct out the similar expert system again rapidly at the same time, have avoid rewriting the work of the complicated code, offered the high-efficient management platform and content to release the platform , there are better prospects . The thesis has made an introduction from systematic composition, function, key technology and implementation method adoptedSome of realization in the system, this thesis studies the newest developing instrument ASP based on Microsoft 2.0, use C# programming language, use ADO.NET to join SQL Server 2000 database under B/S mode, structure shaddock getting bumper crops, high-quality pollution-free culture expert system. The system adopts visual web set one of IE Web Controls, such a series of module as including tree-like controlling part, the controlling part of tab, navigation , a controlling part, etc., have strengthen the man-machine interface, has increased the systematic friendliness. At the same time using .NET identity proves, MD5 encrypts and random verification code, etc. have ensured the systematic security.This paper introduces the theory of expert system and the current situations of relevant fields at first. The second part introduces relevant technology that the system realizes in detail, include Framework , ASP.NET , ADO.NET and relevant technology of database. The third part introduces the design of the expert system frame, including systematic structure and function are designed, develop the system structure and development environment after choosing the system suitable. The fourth part has introduced how to use ASP.NET to develop the expert system, including systematic knowledge base, expert's knowledge system, plant diseases and insect pests diagnoses that prevent and cure the construction of the system and back-stage management system. The fifth part has introduced systematic debugging and running situation.In the last part of the thesis, the advantage designed and realized in ASP.NET expert system summarizing the thesis and studying and prospect forecast, and the system further optimizes the question.