利用C#.net开发的dxf读取程序，对于初学者有较大帮助-The use of C#. Net developed dxf reader, have a greater help for beginners

基于CADImporter，在MFC环境下写的一个小程序，实现了dwg和dxf文件的读取显示。-Based CADImporter, written in MFC environment, a small program to achieve the dwg and dxf files to read display.