maintain horizontal scroll position on autopostback inside

Question

Hi,

 

i'm having 15 columns in the grid, some of the column value is depend on the another one.

For that i've used updated panel  and autopostback for the source control.

 

Eg.

 

DDL 2 is depend on the txtbox 1

for that i've added autopost back for textbox1 (i.e during autopost back of txtbox will populate the values in ddl2)

 

here the during this autopostback the horizontal scroll inside the grid  is getting reset .

 

can you pls help me on this