ASCIIEncoding.GetBytes encodes a Unicode character array or a string. You're passing a StreamReader, which is not among the overloads availble for this method. The list of available overloads is here

I'm trying to http post xml data to a remote server and I get this
error:

BC30518: Overload resolution failed because no accessible 'GetBytes'
can be called with these arguments:

Line 20: Dim d As Byte() =
System.Text.Encoding.ASCII.GetBytes(readStream)

The aspx page is shown below. Can anyone help?
Thanks
Leslie

<%@ Page Language="VB" debug="True"%>
<%@ import namespace="system.io"%>
<%@ Import Namespace="System.Text" %>
<%@ import namespace="system.xml"%>
<%@ import Namespace="System.Net" %>
<%@ import Namespace="System.Web" %>
<Script Language="vb" runat="server">
Sub Page_Load(s as object, e as eventargs)

'Creates a streamreader from an xml file
Dim HttpWReq As HttpWebRequest =
CType(WebRequest.Create("http://server/datafile.xml"), HttpWebRequest)
Dim HttpWResp As HttpWebResponse = CType(HttpWReq.GetResponse(),
HttpWebResponse)
Dim receiveStream As Stream = HttpWResp.GetResponseStream()
Dim encode As Encoding =
system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)

'post readstream to target server
Dim web As New System.Net.WebClient()
web.Headers.Add("Content-Type", "text/xml")
Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(readStream)
Dim res As Byte() = web.UploadData("http://targetserver/postpage",
"POST", d)
Console.Write(System.Text.Encoding.ASCII.GetString(res))
response.write (System.Text.Encoding.ASCII.GetString(res))

readStream.Close()
HttpWResp.Close()

End Sub
</script>

<les> schrieb
[quoted text, click to view]

Right, you can not pass a stream to the GetBytes method. Pass a String or an
array of Chars.


--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

Thanks Armin, but I'm a bit lost here. How would I change my code to
pass a string or array of chars?

Thanks
Leslie


On Sat, 24 Apr 2004 01:16:04 +0200, "Armin Zingler"
[quoted text, click to view]



<%@ Page Language="VB" debug="True"%>
<%@ import namespace="system.io"%>
<%@ Import Namespace="System.Text" %>
<%@ import namespace="system.xml"%>
<%@ import Namespace="System.Net" %>
<%@ import Namespace="System.Web" %>
<Script Language="vb" runat="server">
Sub Page_Load(s as object, e as eventargs)

'Creates a streamreader from an xml file
Dim HttpWReq As HttpWebRequest =
CType(WebRequest.Create("http://server/datafile.xml"), HttpWebRequest)
Dim HttpWResp As HttpWebResponse = CType(HttpWReq.GetResponse(),
HttpWebResponse)
Dim receiveStream As Stream = HttpWResp.GetResponseStream()
Dim encode As Encoding =
system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)

'post readstream to target server
Dim web As New System.Net.WebClient()
web.Headers.Add("Content-Type", "text/xml")
Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(readStream)
Dim res As Byte() = web.UploadData("http://targetserver/postpage",
"POST", d)
Console.Write(System.Text.Encoding.ASCII.GetString(res))
response.write (System.Text.Encoding.ASCII.GetString(res))

readStream.Close()
HttpWResp.Close()

End Sub

I'm creating the streamreader ok , but can't work out how to do the
rest. This bit encodes the stream as iso-8859-1, but how do I convert
this to a string?

system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)


On Sat, 24 Apr 2004 16:57:22 +0200, "Armin Zingler"
[quoted text, click to view]



<Script Language="vb" runat="server">
Sub Page_Load(s as object, e as eventargs)

'Creates a streamreader from an xml file
Dim HttpWReq As HttpWebRequest =
CType(WebRequest.Create("http://server/datafile.xml"), HttpWebRequest)
Dim HttpWResp As HttpWebResponse = CType(HttpWReq.GetResponse(),
HttpWebResponse)
Dim receiveStream As Stream = HttpWResp.GetResponseStream()
Dim encode As Encoding =
system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)

'post readstream to target server
Dim web As New System.Net.WebClient()
web.Headers.Add("Content-Type", "text/xml")
Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(readStream)
Dim res As Byte() = web.UploadData("http://targetserver/postpage",
"POST", d)
Console.Write(System.Text.Encoding.ASCII.GetString(res))
response.write (System.Text.Encoding.ASCII.GetString(res))

readStream.Close()
HttpWResp.Close()

End Sub

Now I'm really confused....I thought you were telling me I need to
convert the streamreader to a string before it can be passed to the
getbytes method.

Is it possible you could show me how to modify the code? I'm quite
lost here
Thanks
Leslie


On Sat, 24 Apr 2004 17:36:43 +0200, "Armin Zingler"
[quoted text, click to view]


<Script Language="vb" runat="server">
Sub Page_Load(s as object, e as eventargs)
'Creates a streamreader from an xml file
Dim HttpWReq As HttpWebRequest =
CType(WebRequest.Create("http://server/datafile.xml"), HttpWebRequest)
Dim HttpWResp As HttpWebResponse = CType(HttpWReq.GetResponse(),
HttpWebResponse)
Dim receiveStream As Stream = HttpWResp.GetResponseStream()
Dim encode As Encoding =
system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)

'post readstream to target server
Dim web As New System.Net.WebClient()
web.Headers.Add("Content-Type", "text/xml")
Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(readStream)
Dim res As Byte() = web.UploadData("http://targetserver/postpage",
"POST", d)
Console.Write(System.Text.Encoding.ASCII.GetString(res))
response.write (System.Text.Encoding.ASCII.GetString(res))

readStream.Close()
HttpWResp.Close()

End Sub

<les> schrieb
[quoted text, click to view]

When you create the Streamreader, you can pass an Encoding object that
specifies the encoding of the chars in the stream. After reading a string
from the Stream, you can pass it to the GetBytes method of an Encoding
object to get the encoded byte array.


--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

<les> schrieb
[quoted text, click to view]

What do you want to convert to a string? If the text in the stream is
encoded in "ISO-8859-1", you can now use the stream to read from
(readStream.readline or readStream.readtoend).

Later you can convert the string to a byte array by passing it to the
GetBytes method of an Encoding object.


--
Armin

How to quote and why:
http://www.plig.net/nnq/nquote.html
http://www.netmeister.org/news/learn2quote.html

On Sat, 24 Apr 2004 20:00:49 +0200, "Armin Zingler"
[quoted text, click to view]

Yes but getting the following error:

BC30518: Overload resolution failed because no accessible 'GetBytes'
can be called with these arguments:

Line 20: Dim d As Byte() =
System.Text.Encoding.ASCII.GetBytes(readStream)


<%@ Page Language="VB" debug="True"%>
<%@ import namespace="system.io"%>
<%@ Import Namespace="System.Text" %>
<%@ import namespace="system.xml"%>
<%@ import Namespace="System.Net" %>
<%@ import Namespace="System.Web" %>
<Script Language="vb" runat="server">
Sub Page_Load(s as object, e as eventargs)

'Creates a streamreader from an xml file
Dim HttpWReq As HttpWebRequest =
CType(WebRequest.Create("http://server/datafile.xml"), HttpWebRequest)
Dim HttpWResp As HttpWebResponse = CType(HttpWReq.GetResponse(),
HttpWebResponse)
Dim receiveStream As Stream = HttpWResp.GetResponseStream()
Dim encode As Encoding =
system.Text.Encoding.GetEncoding("ISO-8859-1")
Dim readStream As New StreamReader(receiveStream, encode)

'post readstream to target server
Dim web As New System.Net.WebClient()
web.Headers.Add("Content-Type", "text/xml")
Dim d As Byte() = System.Text.Encoding.ASCII.GetBytes(readStream)
Dim res As Byte() = web.UploadData("http://targetserver/postpage",
"POST", d)
Console.Write(System.Text.Encoding.ASCII.GetString(res))
response.write (System.Text.Encoding.ASCII.GetString(res))

readStream.Close()
HttpWResp.Close()

End Sub
</script>

Thanks for persevering with me Armin.
It sounds like you are describing exactly what I want to do, but I
don't know how to apply the ReadLine or Readtoend method to my
existing code.
Leslie


On Sat, 24 Apr 2004 20:18:39 +0200, "Armin Zingler"
[quoted text, click to view]