http xml encoding

[Mark]

I'm sending an xml stream through an http connection to my webserver.
Since some of the xml data will have the same characters as the 'xml
characters'(i.e <,>, etc...), I need the xml to be encoded for the
server. For example, is it a standard practice to encode the >
characer as &gt; in the xml ?

Will this do it ?

Dim oEncoder As New System.Text.ASCIIEncoding
requestData = oEncoder.GetBytes(xmlString)

if this is not the correct way to do it, could someone please show me
the correct way ?

Sorry to add another topic, but also this xml data will contain byte
data from a scanned image in one of the fields, so there is a
possibility it will have chr(0) in the data also. If I need to
prepend data to the xml string (so I need to make a copy of it) can I
just assign it to another string or will it get truncated at the
chr(0) like it would in C.

Thanks,
mark

[Cor Ligthert]

Mark,

See for your first problem this thread where Ger had in my opinion the same
goals as you
http://tinyurl.com/6t4ne

For your second problem you first need to serialize your picture what is not
to difficult, see the sample I once made bellow. (and the deserialize is as
well in it)

\\\Needs a form with a picturebox and 1 button
Private Function SerializeByte(ByVal _
imagestring As Byte()) As String
Dim bf As New Runtime.Serialization.Formatters.Binary.BinaryForm atter
Dim mem As New IO.MemoryStream
bf.Serialize(mem, imagestring)
Return Convert.ToBase64String(mem.ToArray())
End Function
Private Function DeserializeString(ByVal _
imagestring As String) As Byte()
Dim bf As New Runtime.Serialization.Formatters.Binary.BinaryForm atter
Dim mem As New IO.MemoryStream(Convert.FromBase64String(imagestri ng))
Return DirectCast(bf.Deserialize(mem), Byte())
End Function
'Test program
Private fo As New OpenFileDialog
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
If fo.ShowDialog = DialogResult.OK Then
Dim fs As New IO.FileStream(fo.FileName, _
IO.FileMode.Open)
Dim br As New IO.BinaryReader(fs)
Dim abyt As Byte() = br.ReadBytes(CInt(fs.Length))
br.Close()
Dim myresultstring As String = SerializeByte(abyt)
Dim abyt2 As Byte() = DeserializeString(myresultstring)
Dim ms As New IO.MemoryStream(abyt2)
Me.PictureBox1.Image = Image.FromStream(ms)
End If
End Sub
///

I hope this helps?

Cor

"Mark" <ma*****@yahoo.com>

I'm sending an xml stream through an http connection to my webserver.
Since some of the xml data will have the same characters as the 'xml
characters'(i.e <,>, etc...), I need the xml to be encoded for the
server. For example, is it a standard practice to encode the >
characer as &gt; in the xml ?

Will this do it ?

Dim oEncoder As New System.Text.ASCIIEncoding
requestData = oEncoder.GetBytes(xmlString)

if this is not the correct way to do it, could someone please show me
the correct way ?

Sorry to add another topic, but also this xml data will contain byte
data from a scanned image in one of the fields, so there is a
possibility it will have chr(0) in the data also. If I need to
prepend data to the xml string (so I need to make a copy of it) can I
just assign it to another string or will it get truncated at the
chr(0) like it would in C.

Thanks,
mark