อยากเพื่ม textbox ไปเรื่อย ด้วยปุ่มแอด เป็น asp.net(c#) ครับ

        Dim i As Integer
        Dim fileUpload As FileUpload
		Dim lblBr As Label
        For i = 1 To Me.ddlNum.SelectedItem.Value
            fileUpload = New FileUpload
            With fileUpload
                .ID = "fiUpload" & i
            End With
			lblBr = New Label
			lblBr.Text = "<br>"
			Me.pnlCtrl.Controls.Add(fileUpload)
			Me.pnlCtrl.Controls.Add(lblBr)			
        Next

<script type="text/javascript"><!--


    $(document).ready(function () {

        var counter = 2;
        $("#add").click(function () {
            if (counter == 11) {
                alert("เกินจำนวน");
                return false;
            }
            $("#textBoxes").html($("#textBoxes").html() + "<div id='d" + counter + "' ><label for='t2'> " + counter + ".</label><input type='textbox' id='t" + counter + "' > </div>\n");
            ++counter;
        });

        $("#remove").click(function () {
            if (counter == 1) {
                alert("Can u see any boxes");
                return false;
            }
            --counter;
            $("#d" + counter).remove();
        });
    });
// --></script>

<div id='textBoxes'>
                            <div id='d1' ><label for="t1">1.</label><input type='textbox' id='t1' ></div>              
                        </div>
                        <input type='button' value='add' id='add'>
                        <input type='button' value='remove' id='remove'>