Creating Html table from listitem collection

Hi,
I am creating a html table from a list collection. I am able to create the table, but I am not able to group the related items and add into a single table.
StringBuilder MailContent = new StringBuilder(); ListItemCollection listBoxData = new ListItemCollection(); foreach (ListItem item in listBoxData) { MailContent.AppendFormat("<table border=" + "1" + ">"); MailContent.AppendFormat("<tr>"); MailContent.AppendFormat("<td>Student ID</td>"); MailContent.AppendFormat("<td>Student Name</td>"); MailContent.AppendFormat("<td>Mark1</td>"); MailContent.AppendFormat("</tr>"); MailContent.AppendFormat("<tr>"); MailContent.AppendFormat("<td>" + item["Student ID"].ToString() + "</td>"); MailContent.AppendFormat("<td ...