How to write this code in c#

<%
response.buffer=false
id=killchars(request.querystring("id"))



    Response.ContentType = "text/xml"
    set con = server.CreateObject("adodb.connection")
    con.open strCon


    set rs=Server.CreateObject("ADODB.Recordset")
    sqltxt="SELECT top 12 id,title FROM table1 where status=1 and not id="&id&" and admin_no is NULL order by sticky desc,date desc"
    'response.write sqltxt
    rs.open sqltxt,con,0,1



    Response.Write "<?xml version=""1.0"" encoding=""iso-8859-1"" ?>" & vbCrlf
    Response.Write "<rss version=""2.0"">" & vbCrlf
    Response.Write "<channel>" & vbCrlf
    Response.Write "<title>Recent results</title>" & vbCrlf

    Do while Not rs.eof


    Response.Write "<item>" & vbCrlf
    Response.Write "<title>" & encode(rs("title")) &"</title>" & vbCrlf
    Response.Write "<link>http://localhost/news/"&cleanstring(rs("title"))&"-"&rs("id")&".asp</link>" & vbCrlf
    'Response.Write "<price>" & rs("sb_price")&"</price>" & vbCrlf
    'Response.Write "<description>"  & vbCrlf
    'Response.Write "<![CDATA[" & vbCrlf
    'Response.Write left(replace(rs("sb_details"),"&","and"),100)& "...]]>" & vbCrlf
    'Response.Write "</description>" & vbCrlf
    Response.Write "</item>" & vbCrlf

    rs.MoveNext
    Loop
    Response.Write "</channel>" & vbCrlf
    Response.Write "</rss>" & vbCrlf

    rs.Close
    set rs = nothing
    con.Close
    set con= nothing

%>