ASP.NETで実現できるでしょうか？

        Dim wRow As TableRow
        Dim wCell As TableCell
        Dim wCtrlText As TextBox
        Dim intRow As Integer
        Dim intCell As Integer
        Dim strText As String
        Dim aryTitle As String() = {" ", "A1", "A2", "A3", "A4"}

        ' ヘッダー
        wRow = New TableRow
        For Each strText In aryTitle
            wCell = New TableCell
            wCell.Width = wCell.Width.Pixel(50)
            wCell.BorderStyle = BorderStyle.Solid
            wCell.Text = strText
            wCell.HorizontalAlign = HorizontalAlign.Center
            wRow.Cells.Add(wCell)
        Next
        tblList.Rows.Add(wRow)

        ' 明細
        For intRow = 1 To 3

            wRow = New TableRow

            '　列タイトル
            wCell = New TableCell
            wCell.Text = "あ" & intRow.ToString
            wCell.BorderStyle = BorderStyle.Solid
            wCell.HorizontalAlign = HorizontalAlign.Center
            wRow.Cells.Add(wCell)

            For intCell = 1 To 4

                '　列項目
                wCell = New TableCell
                wCtrlText = New TextBox
                wCtrlText.ID = "txt" & intRow.ToString & "_" & intCell.ToString
                wCtrlText.Width = wCtrlText.Width.Pixel(42)
                wCell.BorderStyle = BorderStyle.Solid
                wCell.Controls.Add(wCtrlText)
                wRow.Cells.Add(wCell)

            Next

            ' 行の追加
            tblList.Rows.Add(wRow)

        Next