我自己写的一个关于AutoCAD的.net二次开发的扩展数据xdata功能的程序，用c#写的，提供3种方式编辑和修改扩展数据xdata-I wrote it myself on AutoCAD s. Net secondary development function of the expansion of data xdata procedures, with c# Written to provide three kinds of ways to edit and modify the Ex

C# 对AutoCAD进行二次开发时对AutoCAD数据库DataBase和图形实体Entity的操作类-C# to the secondary development of AutoCAD at the AutoCAD database entities and graphics DataBase operation Entity type

外挂程序，基于autocad的二次开发，主要为锅炉行业的绘图，提供了方便。针对锅炉行业的绘图而进行的开发。-Plug-in application, based on autocad secondary development, mainly drawing the boiler industry, providing more convenient. The drawing for the boiler industry carried out development.

基于AutoCAD平台，Object ARX进行CAD的二次开发基本教程-Secondary development of CAD based on the AutoCAD platform, Object ARX basic tutorial