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1、摘要1Abstract21绪论41.1课题背景41.2系统设计目的与意义42系统相关技术介绍52.1C#技术简介52.2SQL技术62.2.1数据库的基本概念62.2.2本系统中数据库的访问63系统分析73.1需求分析73.1.1可行性分析73.1.2系统性能需求83.2系统流程图设计93.3数据存储分析：实体联系图（E-R）104系统总体设计124.1系统总体功能层次图124.2系统功能模块设计124.3数据库设计134.4部分源代码的设计145系统的具体实现及测试255.1登录界面255.2教师查询界面265.3
2、学生选课界面265.4学生浏览、修改界面27总结28致谢29参考文献3030摘要随着在校大学生的不断增加，学生选课也成为学校对学生管理中不可缺少的一部分。以往的选课方法是使用人工的方法管理文件档案，这种管理方式存在许多的缺点：效率低、保密差，另外时间一长，将产生大量的文件和数据，这对于查找、更新和维护都带来不少的困难。随着科学技术的不断提高，计算机已经进入人类社会的各个领域并发挥着越来越重要的作用。作为计算机应用的一部分，实用技术绝对选课信息进行管理，具有手工管理所无法比拟的优点。本文着重讨论了用ADO.NET技术和
3、SQLServer2005开发选课系统的数据库的访问技术，并给出了一些可以实现的核心代码。通过该系统，使学生可以很方便的在校园网上进行网上选课。该系统使用C#作为ADO.NET的开发语言，SQLServer2005作为数据库,系统有较高的安全性和较好的性能。关键词：学生选课、C#、ADO.NET、SQLServer2005 30Abstract With the continuous increase in college students, students of students elective is be
4、coming an integral part of management. Previous elective method is to use artificial methods to manage file archives, this management approach has many disadvantages: low efficiency, poor security, while over time, will generate a large number of documents and
5、data, which for finding, updating and maintenance of bring a lot of difficulties. With the continuous improvement of science and technology, the computer has access to all areas of human society, and play an increasingly important role. As a part of computer ap
6、plications and practical management of information technology is absolutely elective, with manual management incomparable advantages. This paper focused on using ADO.NET technology and SQL Server 2005 Developer elective system, access to the database technology
7、, and give some of the core code can be achieved. Through the system so that students can easily online Online Course on campus. TheSystemC#astheADO.NETdevelopmentlanguage,SQLServer2005as a database, System has a higher security and better performance. IC # as
8、the ADO.NET development language, SQL Server 2005 as a database. System has a higher security and better performance. In which the database connection string can change at a
