gridview within gridview to implement master details format+insert data

[Amitava Bardhan]

I have two tables...Charges and Assets. The chargeID in charges (master)
table is a primary key which is a foreign key in assets (details) table.

I want to display data in master details format implementing gridview within
gridview. That is selecting a master record will display the associated
details with that record.I also want to add the ability to add more details
rows corresponding to a master row when the user clicks on a button (like
add details). Similarly there will be a button with each master row which
one clicked by the user will add new master details information. I don't
want to do it using formsview or detailsview. IS this possible? Can anyone
sow me the way by sharing some code?

Thanks for all your help!!!

url:http://ureader.com/gp/1422-1.aspx