1.首先引用dll文件

2. //DBAccess.dll引用一個dll文件
    private IDBAccess _access;
    private static readonly string mySqlConnectionString = System.Configuration.ConfigurationManager.AppSettings["MySqlConnectionString"].ToString();
    protected void Page_Load(object sender, EventArgs e)
    {
        _access = DBFactory.getDBAccess(DBType.MySql, mySqlConnectionString);
        //0k可以增刪崇改查了
        
    }

如下图片

.net增删该查DBAccess的应用