In a DataGrid I am dynamically adding some Template columns, each with a CheckBox in them. How do you then retrieve the checked state of the dynamically added CheckBoxes in the Postback?

I have done similar things adding controls dynamically on a form but not in a grid. When I try to retrieve the checked state, the index goes out of scope in the Postback as if the columns are not there. Trying to add the columns in the Postback before trying to retrieve the state is also failing.

What am I missing here?

Thanks,
Bill