Require Solution Urgently

Question

 int k = 0;
            for (int i = 0; i < rowsHeading; i++)
            {
                Response.Write("<tr style='border:1px solid black'>");
                Response.Write(String.Format("<td style='border:1px solid black; text-align:left;width:400px'>{0}</td>", dsHeader.Tables[2].Rows[i]["RowHeaderName"]));
               if (dsHeader.Tables[2].Rows[i]["RowValue"].ToString() == "1")
               { --------------------------------------------------------- }
               else if (dsHeader.Tables[2].Rows[i]["RowValue"].ToString() == "2")
               { ---------------------------------------------------------- }
               else if (dsHeader.Tables[2].Rows[i]["RowValue"].ToString() == "3")
               { ------------------------------------------------------------ }
                for (k = 0; k < rowsHeader; k++)
                {
                    Response.Write("<td style='border:1px solid black;width:130px'> <input runat='server' type='text' Width='130px'/></td>");
                }
                Response.Write("</tr>");
            }

Instead of "---------" i want to change the style of td & make the text readonly
how to do it ?