get disable control values during postback

 Hi,
I have a page it contains some criteria part based on criteria click upon generate button data will displayed on gird
page also contains modify button where user can modify the grid data
once user clicks modify button the selected criteria part will disable
everything works as expected.. but i am not getting the disable control values during postback
how to get the values during postback?
 
Thanks
Maverick
 
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