RadioButtonList(HTML) Control in a GridView

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I want to use a RadioButtonList Control(HTML) in a GridView control.

I can see the RadioButtonList control with each row in the GridView with the
code:

<asp:GridView ID="GridView1" runat="server"
AutoGenerateCol umns="False" DataKeyNames="Q uestion_id"
DataSourceID="S qlDataSource1">
<Columns>
<asp:BoundFie ld DataField="q_De scription"
HeaderText="Que stion" SortExpression= "q_Descript ion" />
<asp:BoundFie ld DataField="Answ er_id" HeaderText="Ans wer_id"
SortExpression= "Answer_id" />
<asp:TemplateFi eld HeaderText="Lev el of Helpfulness">
<ItemTemplate >
<asp:RadioButto nList ID="RadioButton List1"
runat="server" RepeatDirection ="Horizontal " SelectedValue=' <%#
Bind("Answer_id ") %>'>
<asp:ListItem Value="1">None</asp:ListItem>
<asp:ListItem Value="2">Minim al</asp:ListItem>
<asp:ListItem Value="3">Moder ate</asp:ListItem>
<asp:ListItem Value="4">Very</asp:ListItem>
<asp:ListItem Value="4">Highl y</asp:ListItem>
</asp:RadioButton List>
</ItemTemplate>
</asp:TemplateFie ld>
</Columns>
</asp:GridView>

Now I want to be able to insert rows in a table and get the value selected
in the RadioButtonList .