convert this small code into C#

Question

<% If session("varuser")="" and session("client_name")="" then %>
                      <input type="checkbox" name="checkbox_terms" value="Readed">
                      <font class=bcmini> I have read
                      <%ahref="<a href=""#"" onClick=""MyWindow=window.open('www.autostopcy.com/Terms.aspx','MyWindow','toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=yes,resizable=yes,width=900,height=680'); return false;"">"
       Response.write(ahref)%>
                      <span class="bumini">terms and conditions</span>
                      <%Response.write("</a>")%>
                      and agree</font><br>
                      <%End if %>