Build your CAD files Viewer in C# to view drawings. Convert DWG, DGN to render as HTML, JPG, PNG, or Pdf using document Viewer .NET API by GroupDocs....render as HTML, JPG, PNG, or PDF . Get layouts and layers of DWG...of DWG drawings . .NET CAD Viewer API – DWG, DXF, DWF, DGN #...