netDxf is a .net library programmed in C# to read and write AutoCAD dxf files. It supports AutoCad2000, AutoCad2004, AutoCad2007, AutoCad2010 and AutoCad2013 dxf database versions, in both text and binary format. According to my previous experience this library worked perfectly in a small application made to tidy up all EntityObjects on a plan, and assign new layers and properties to each EntityObject.
Now, the thing is before jump to next step I would prefer if you can ping me here and share me a demo files. So that I can check on it and create a sample for you. As soon as I will create the sample and will send to you we both can get confidence. I can understand that yes the application is feasible to do and you can get I can complete the work or not. So, I will wait for your sample file to check here.
At the same time, you want to create the files using this application as well. So, can you please clear me about the entity you want to use when you will create this application.
I think you are looking to use [login to view URL], honetly I have experience on the above not with this. But if you want then I can check once again with this and can create a proof of concept for our convenience. Please let me know your thought on this.
I am happy to discuss with you because without discussion it may create mis-understandings later. Apart from discussion, as I stated above I will have to check the files you are going to use too.