急!!!我用asp连sybase 通过odbc,为什么读出来的数据记录数是 - 1啊

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我用asp连sybase 通过odbc,为什么读出来的数据记录数是 - 1啊
晕了,代码如下:
Const adUseServer = 2
Const adModeReadWrite = 3
Const adOpenKeyset = 1
Const adLockOptimistic = 3

strTelTable = "T_SYTP"
SysbaseConnStr = "dsn=SYTP;UID=lishui;PWD=ls1688"

'连接到sybase
If PhotoID <> "" And IsNumeric(PhotoID) Then
Sql = "SELECT PHOTOID,PROJECTID,PHOTONO,TELVOTENO FROM " & strTelTable & " WHERE (PHOTOID='" & PhotoID & "')"
Else
Sql = "SELECT PHOTOID,PROJECTID,PHOTONO,TELVOTENO FROM " & strTelTable
End If
Response.Write (Sql & "<BR>")

Set myConn = Server.CreateObject("ADODB.Connection")


'myConn.Open SysbaseConnStr '打开sybase连接
'Set Rs = myConn.Execute(Sql)'执行sql命令

myconn.ConnectionString = SysbaseConnStr
myconn.CursorLocation = adUseServer
myconn.Mode = adModeReadWrite
myconn.IsolationLevel = adXactCursorStability
myconn.Open
Set rs = Server.CreateObject("ADODB.Recordset")
rs.CacheSize = 50
rs.Source = sql
rs.ActiveConnection = myconn
rs.CursorType = adOpenKeyset
rs.LockType = adLockOptimistic
rs.Open


Response.Write (Rs.RecordCount & " 条记录<br>")

[dh20156]

TRY:
Set rs = Server.CreateObject("Adodb.Recordset")
rs.open sql,conn,1,1
If Not rs.eof then
response.write rs.recordcount
end if
rs.close
Set rs=Nothing