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CAD Import .NET is an easy-to-use API for reading AutoCAD DXF in C#, VB.NET and other .NET applications. It is completely programmed in C#. Demos: Viewer, Import, Add Entities, ViewerControl.

CADViewX is an AcitiveX library for viewing and printing AutoCAD DWG & DXF, HPGL, SVG and CGM files. The library also supports BMP, JPEG and WMF. The 'Tile' feature allows you to print an image onto any number of papers with any desired scale.