一本描述CAD文件怎么转变成SHP文件的教程，希望大家喜欢-A descr iption of how CAD file into a SHP file tutorial, I hope you like

程序利用ARCENGINE的二次开发接口,把CAD数据转换为shp数据，并利用其中的一个字段，将数据进行分层。-The second development program using ARCENGINE interface, the CAD data is converted to shp data and use a field in which the data were stratified.