Need help while binding controls in dynam Generic grid view

Question

 

 

hello,Everyone

 

In my Project I have requirement of generic grid view .where I cant use In built server side Controls.

I have made  grid view  and all its template text box and bound field with help of c# and there

 Is requirement ,On the selected index change of Drop down List the grid will generates the no

of columns which has template fields containing text box.if select 3 in specific rows drop down  

then 3 columns comes at that row of grid view.

                                                                        so ,please share your suggestion and ideas to help me out. 

I will highly thank full of yours