Thank you for your questions.
I will answer your questions once a time.
1. Current DWF Toolkit does not support vs2010, however, we are considering this.
2. You can use the DWF Toolkit dlls within c#, however, the DWF Toolkit code is written in c++, you need to encapsulate the dlls with cli.
Please let me know if you have any further questions.
Silvia Cao
SW Engineer
PSEB-GE- ACRD PSEB
Autodesk, Inc.