Adding dynamic controls in html table after certain <tr>

Hi,

I am working on ASP.net 2.0 application using C#

I need to create dynamic control in my html table

<table width="90%" id="tblForm" runat="server">
            <tr id="dynRow" runat="server">
                <td id="dynTD" runat="server">
                </td>
                <td>
                </td>
                <td>
                </td>
            </tr>
            <tr>
                <td>hgf
                </td>
                <td>
                </td>
                <td>
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Label ID="lblText" runat="server" Text="Click button for the text"></asp:Label></td>
                <td>
                </td>
                <td>
                </td>
            </tr>
            <tr>
                <td>
                    <asp:Button ID="btnSubmit" runat="server" OnClick="btnSubmit_Click" Text="Submit" /></td>
                <td>
                </td>
                <td>
                </td>
            </tr>
        </table>
            

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I am able to create dynamic control as below:
      

TextBox txtBox = new TextBox();
	txtBox.ID = "txtBox1";
	txtBox.Visible = true;

	dynTD.Controls.Add(txtBox);

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But the problem is I need to add more <tr> after <tr> having id "dynRow"
and then adding controls to it.

Please advise how to find <tr> from table and add further dynamic <tr> after it by adding controls.

Regards,