Open DXF file and add Text using an external application

[Raider_71]

Hi I have been doing a bit of programming with Visul Studio 2010 (VB) with Inventor and created a number of small standalone applications doing tasks like printing drawings and exporting properties etc.

I am now busy with writing a program exporting all the flat patterns of all the sheet metal parts in an Inventor assembly. I got it right and it works pretty well but now need to add some text to the DXF file. I want to add things like QTY, Thickness and Material to the file. I turned to google and started searching the web just to find that there are a load of nice DXF modules available at a huge cost. Not worth it for a small once off application like this. Anyway then I though that maybe AutoCAD has something I can use as AutoCAD can be available on the PC I will be running the app from.

So does anyone know if this would be possible using VB.net with AutoCAD API with a standalone application, to open a DWG or DXF file created by Inventor and to add a few lines of text and to save it again?

Thanks!

Pieter