How do i use checkboxes inside the Grid!

Can anyone help if they may.

I am using the widgets on my application and i have added checkboxes inside, but now the problem is that if i scroll down, everything resets and checkboxes whenever i select them become unchecked. Now i would like to be able to have them keep their values, is there anyone who can help me out there.

I posted this earlier and a guy by the name of Alex told me to create the checkboxes outside of the HTML, can someone help me with a short example of how i can do this.

Any help is sincerely appreciated.

Thanking you all in advance.