td>%# int.Parse(Eval("price").ToString()) > 3600 ? "a>#/a>" : Eval("price").ToString()%>/td>

public string ReturnStr(string str)
    {
        if (string.IsNullOrEmpty(str))
            return "";
        if (str == "Iphone4s")
            return "a>Iphon5/a>";
        else
            return str;
    }
td>%# ReturnStr(Eval("productName").ToString())%>/td>