Autocad 2012 Plugin using C#

Hi guys 
I told you these days i am developing a plugin for Autocad 2012.
so i thought to add a video of my project.



Actually still i am developing it and also have to enhanced some features.
Mainly client wants to

• Add new dynamic palette (with specific shapes. shapes are defined by the client)
• Autocad user should able to use these shapes and make drawing (Dragging and dropping to  user specified point)
• When the Autocad user finish his drawing he should able to simply click a button and get the invoice of added objects.Each object has a certain price.

So  i used sql server database then i could able to manage all objects ,catogories, prices, location etc..
i am looking forward to connect this database to the asp.net website and client will able to simply manage the data in database through internet  (like object price).
Also client will able to add new objects (shapes).
Please check the video demonstration

Thank you :)