Multiple Radiobuttons in gridview

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ASPX : 

 <asp:TemplateField Visible="true" HeaderText ="Strongly Disagree">
                                                    <ItemTemplate>
                                                           <%-- <asp:RadioButton ID="rdbtn1" runat ="server" />--%>
                                                           <input name="MyRadioButton1" type ="radio" value = "'<%# Eval("SQTN_NO") %>'" />
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField Visible="true" HeaderText ="Agree">
                                                    <ItemTemplate>
                                                             <%-- <asp:RadioButton ID="rdbtn2" runat ="server" />--%>
                                                             <input name="MyRadioButton2" type ="radio" value = "'<%# Eval("SQTN_NO") %>'" />
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                <asp:TemplateField Visible="true" HeaderText ="Disagree">
                                                    <ItemTemplate>
                                                               <%--<asp:RadioButton ID="rdbtn3" runat ="server" />--%>
                                                               <input name="MyRadioButton3" type ="radio" value = "'<%# Eval("SQTN_NO") %>'" />
                                                    </ItemTemplate>
                                                </asp:TemplateField>
                                                 <asp:TemplateField Visible="true" HeaderText ="Strongly Agree">
                                                    <ItemTemplate>
                                                          <%-- <asp:RadioButton ID="rdbtn4" runat ="server" />--%>
                                                          <input name="MyRadioButton4" type ="radio" value = "'<%# Eval("SQTN_NO") %>'" />
                                                    </ItemTemplate>
                                                    
                                                </asp:TemplateField>


C# :

protected void btnSubmit_Click(object sender, EventArgs e)
    {
        string selectedValue = Request.Form["MyRadioButton1"];
        lblMsg.Text = selectedValue;
//same for next RadioButton also ....
    }

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