Create C# ASP.NET web application with multiple textbox insert to db

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C#

ASP.NET

I'm trying to create web application with multiple textbox insert to db (dynamic)

- First: I've bind question from my db and display it in Listview;
- Question: I would like to have textbox together with my question in the listview for Answer.

(If query and found 4 question then program should create 4 textbox for answer to each question)

Then in web application (Front) - clint input answer and click sumbit to update to data in the different table.

I really have issue with the multiple textbox return value then Insert to db table. Any Idea what I should read or Any function should I use.

What I have tried:

Behind:

private void BindQuestion()
{
    SqlConnection sqlcon = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;Initial Catalog=master;");
    SqlDataAdapter sqlda = new SqlDataAdapter("Select * from dbo.Question", sqlcon);

    DataTable dtbl = new DataTable();
    sqlda.Fill(dtbl);

    dlExam.DataSource = dtbl;
    dlExam.DataBind();

}

Front:

<asp:DataList ID="dlExam" runat="server" DataMember="QID" BackColor="#F0F0F0">
            <ItemTemplate>
                <table width="800">
                    <tr>
                        <td align="left">
                            (<%#Container.ItemIndex+1 %>)  <asp:Label ID="QID" runat="server" Text='<%# Eval("Question") %>'></asp:Label>
                            <asp:Label ID="lblQuestionId" runat="server" Text='<%# Eval("QID") %>' Visible="false"></asp:Label>
                        </td>
                    </tr>
                    <tr>
                        <td align="left">
                           <asp:TextBox ID="rblAnswers" runat="server"></asp:TextBox>  
                        </td>
                    </tr>
                    <tr>
                        <td></td>
                    </tr>
                    <tr>
                        <td></td>
                    </tr>
                    <tr>
                        <td></td>
                    </tr>
                </table>
            </ItemTemplate>
             <EditItemTemplate>
                  <asp:TextBox ID="Textbox" Style="width: 100px; background-color: white;" 
                                runat="server" CausesValidation="true" />

            </EditItemTemplate>
        </asp:DataList>

</asp:Content>

CommandArgument='<%# Eval("ID") %>

is not work for multiple textbox or dynamic textbox.

Thank you.!