VC程序，可以生成dxf格式的二维图形，用autocad 可以观察生成的图形。-VC procedures can generate 2D dxf format graphics, can be observed using autocad generated graphics.

C#写DXF,程序简单易懂。对初学者会有帮助-C# to write DXF, easy-to-read process. It would be helpful for beginners