[求助]AE接口

<P> IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();</P>
<P>IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();</P>
<P>请问 ShapefileWorkspaceFactory是个接口能实例化吗 这俩代码运行都没问题 为什么？</P>

<P>比如打开一个dbf表格，可以这样写：</P>
<P>string filePath = @"\\sql\gis_data\arcengineapps\osp_seasonalchecking\GHU\Hydrant\Data"; <BR>string tableName = "selectedhydops.dbf"; <BR>IWorkspaceFactory wsFactory = new ShapefileWorkspaceFactoryClass(); <BR>IWorkspace ws = wsFactory.OpenFromFile(filePath, 0); <BR></P>

<P> 迷茫啊   能否说清楚点啊    谢谢了！！！</P>
<P>IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();</P>
<P>IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactoryClass();</P>
<P>请问 ShapefileWorkspaceFactory是个接口能实例化吗 这俩代码运行都没问题 为什么？</P>

所有的组件对象类被转换成为被管理的类；被管理的类名与起初的类<BR>名加上‘Class’相同。例如，Point组件对象类的名称是PointClass。<BR>所有类也有一个和组件对象类相同名称的接口，该接口对应于组件对<BR>象类缺省接口。例如，PointClass有一个Point接口。类型库导入者添<BR>加这个接口，这样客户端可以注册为事件汇。