changing XmlTextWriter's character encoding to 8859-1

I've got an xml document that uses the 8859-1 standard 7-bit ASCII character set.. but for some reason when i read it to an xmldocument and spit it back out some values look like garbage

if i remove the tag:
<?xml version="1.0" encoding="ISO-8859-1"?>
everything is displayed correctly (in IE when viewing the xml file) obviously the data is not being output using the same character set as i read it in.. is there any way to force the XmlTextWriter to use specific character encoding (like 8859-1)?
Thanks!
~Caleb
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CajonesAsked:
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Fernando SotoRetiredCommented:
Have you tried the following?

Dim xmlTW As New XmlTextWriter(FileName, Encoding.ASCII)

or if using streams

Dim xmlTW As New XmlTextWriter(StreamName, Encoding.ASCII)
Fernando SotoRetiredCommented:
Sorry I for got what section I was in, try it this way.

XmlTextWriter xmlTW = new XmlTextWriter(FileName, Encoding.ASCII)

or if using streams

XmlTextWriter xmlTW = new XmlTextWriter(StreamName, Encoding.ASCII)
CajonesAuthor Commented:
heh, i figured out what you meant ;)
what do i need to include for Encoding? its saying its not defined.
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Fernando SotoRetiredCommented:
include

using System.Text

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CajonesAuthor Commented:
that did it, thanks!
CajonesAuthor Commented:
hey, i posted a follow up question here: http://experts-exchange.com/Programming/Programming_Languages/C_Sharp/Q_21481493.html

now that ive got it speaking ASCII, ive got some high value characters that dont fit in ASCIIs 7bit playground. Any idea how to get it to encode those high values as unicode escape sequences?
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