Get Selected Value of RadioButtonList inside Repeater control in ASP.Net

Hi All,

    I have added a RadioButtonList inside a repeater as follows:

(.aspx file):

    <asp:Button ID="Button1" Text="Add Comment" runat="server" />         
        <asp:Panel ID="pnlPanelDemo" runat="server" CssClass="modalPopup" ViewStateMode="Disabled"> 
        <cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"> 
        </cc1:ToolkitScriptManager>
        <asp:Repeater ID="rptComments" runat="server"> 
            <ItemTemplate>                 <table> 
                    <tr>                         <td> 
                            <asp:Label ID="lblName" runat="server" Text='<%# Eval("QUESTION_DESC") %>'></asp:Label> 
                        </td> 
                        <td style="padding-left: 20px;"> 
                            <asp:RadioButtonList ID="RadioButtonList1" runat="server" Height="48px" RepeatDirection="Horizontal" Width="510px">
                                <asp:ListItem>Very Poor</asp:ListItem>
                                <asp:ListItem>Poor</asp:ListItem>
                                <asp:ListItem>Average</asp:ListItem>
                                <asp:ListItem>Good</asp:ListItem>
                                <asp:ListItem>Very Good</asp:ListItem>
                            </asp:RadioButtonList> 
                        </td>                     </tr>
                                     </table> 
            </ItemTemplate>         </asp:Repeater>
        <table>        <tr>                     <td> 
                    </td> 
                    <td style="padding-left: 20px;"> 
                        <asp:Button ID="btnAdd" runat="server" OnClick="AddComment" Text="Add Comment" /> 
                    </td>                     <td> 
                    </td>                 </tr> 
        </table> 

Now suppose if 3 questions are displayed on the webpage then 3 radiobuttonlists are displayed. I need to send the selected text of radiobuttons separately in my table in SQL Server on a button click event.

Suppose if selected answers are Very Poor, Average and Good then database entry should look like:

1         Very Poor

2         Average

3         Good

(.aspx.cs file)

protected void AddComment(object sender, EventArgs e)        {             string constr = System.Configuration.ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;             string sqlStatment = "INSERT INTO FeedbackResponse(QUESTION_ID,RESPONSE) values(@QID,@RESP)";             using (SqlConnection con = new SqlConnection(constr))            {                 using (SqlCommand cmd = new SqlCommand(sqlStatment, con))                 {                    con.Open();                     cmd.Parameters.AddWithValue("@RESPONSE",this.rptComments.                     cmd.ExecuteNonQuery();                    con.Close();                 }            }

I am not sure what to do in the bold line.

Please help me.