ThreeLayer有关详细信息，请参考 http://go.microsoft.com/fwlink/?LinkId=46995 或搜索帮助主题“从 Visual Studio .NET 2002 或 2003 转换”。-ThreeLayer For more information, please refer to http://go.microsoft.com/fwlink/?LinkId=46995 or search the help topic From the Visual St