Preserving state of Checkboxes while paging in ASP.Net GridView Control

Hello,

I want to preseve state of Checkbox in Gridview, I do not have Checkall Checkbox. 

Si i confused how to use below code

http://www.aspsnippets.com/Articles/Preserving-state-of-Checkboxes-while-paging-in-ASP.Net-GridView-Control.aspx

this code because I do not have CheckboxAll check box

Can you please help me 

How to preseve Checkbox status while paging ?