When Click HtmlInputRediobutton,Checkbox selection disappears

[Welcome2017]

I have a form with an input radio control in a template field on grid.
I have a checkbox also on the same grid
When the user selects Rediobutton,
the selection of checkbox disappears.. I would like the selection to
persist after the rediobutton click

[Frinavale]

Consider storing the checked items in hidden fields when they are checked. That way you can track what the user has done and re-display the checked items upon re-displaying the grid.