ADO.NET是.Net fr a meWork SDK中用以操作数据库的类库的总称。而DataSet类则是ADO.NET中最核心的成员之一，也是各种开发基于.Net平台程序语言开发数据库应用程序最常接触的类。之所以DataSet类在ADO.NET中具有特殊的地位，是因为DataSet在ADO.NET实现从数据库抽取数据中起到关键作用，在从数据库完成数据抽取后，DataSet就是数据的存放地，它是各种数据源中的数据在计算机内存中映射成的缓存，所以有时说DataSet可以看成是一个数据容器。同时它在客户端实现读取、更新数据库等过程中起到了中间部件的作用（DataReader只能检索数据库中的数据）。-ADO.NET yes. Net fr a meWork SDK which is used to operate the database category for its tributaries. DataSet and ADO.NET category is the most crucial one of the members also on various development. Net platform programming language to develop database applications most frequently in touch with the class. The reason why the category of ADO.NET DataSet has a special status, because ADO.NET DataSet in achieving collected data from the database plays a key role the completion of data from the database collected, the DataSet is data storage, it is a variety of data sources of data in computer memory mapping into the cache, So sometimes that DataSet can be seen as a data containers. It will also achieve the client read, the process of updating the database, etc. have played a role in the intermedi