本文转自http://www.cnblogs.com/Mysterious/p/3422901.html SQL代码: create database ThreeDb go USE ThreeDb; GO CREATE TABLE classify --分类表 ( id ,), name ) not null ) GO CREATE TABLE product --产品表 ( id ,), name ) not null, price decimal, , c_id int FOREIGN KE…
1.C#中提供的DataReader可以从数据库中每次提取一条数据. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.OleDb; using System.Drawing; using System.Text; using System.Windows.Forms; namespace WindowsApplicat…