Use C# .NET AutoCAD to PDF converter to convert DWG or DXF to PDF in C#. You can convert DWG, DWF, DWT and DXF to PDF, JPEG, PNG, BMP, GIF and TIFF in C# .NET as well....Save by passing the file path (or an object of MemoryStream)...Save method by passing the file path (or an object of MemoryStream)...