How to add text so when clicked link should open

Question

Hi

foreach (var coll in objMentor)
{
GrpLink = GrpLink +  "<a hf = 'SessionCalendar.aspx &val=" + coll.GroupID + "&MID=" + coll.ModuleID + " </a>" + " ,";
}

htmlTable.Append("<tr>");
htmlTable.Append("<td>" + GroupCollection + "</td>");
htmlTable.Append("<td>" + GrpLink + "</td>");
htmlTable.Append("</tr>");

Thanks