Dynamic Control Re-Create Issue In Asp.net

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C#

ASP.NET

.NET

Hi,
I have created dynamic controls in one website , I have taken one asp:table in design and adding row,cell and inside cell adding different asp.net controls.I have radiobuttonlist as well as button control for that i have created dynamic selection change and on click event accordingly.

now when i select any item from radiobutton list and page is going to postback so all the controls is going to disappear , that is due to postback but how can we restrict to recreate all the controls on every post back ?

Because unnecessary it is taking heavy execution load on server and I have 11 Gb ram on server and around 200 people continuesly accessing my site at a same time.

To Improve my site performance i have taken almost steps 1) stored 25 table on cache 2) taken per user 2 session with session.sessionid for uniqnuness etc.

But still load, so i think that is due to re-creating controls so please let me know how i can stop to re-creating this control on every postback so that my site performance can be increase.

Thanks In Advance.
shailesh