Get row selected from datagrid in usercontrol inside a form

Hello, 

I have a form with a usercontrol inside. In the user control I have a grid with different values ​​and a checkbox. At the push of a button on the form I would like to read the selected value in the grid and the state of the checkbox. 
I do so

(CheckBox) chk=(CheckBox) userControlSample.FindControl(chkBox1)

but does not work ,visual studio tells me that the FindControl method does not exist , im using visual studio 2013 and framework 2.0

Thanks

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