Autodesk.inventor.interop.dll

Application inventorApp = null;

Inventor.Application inventorApp = (Inventor.Application)Marshal.GetActiveObject("Inventor.Application"); PartDocument partDoc = (PartDocument)inventorApp.ActiveDocument; WorkPlane xyPlane = partDoc.ComponentDefinition.WorkPlanes[3]; autodesk.inventor.interop.dll

C:\Program Files\Autodesk\Inventor \SDK\DeveloperTools\Bin\autodesk.inventor.interop.dll Application inventorApp = null; Inventor