[Mono-bugs] [Bug 372525] New: XmlStringWriter fails for StringWriter without Encoding.

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https://bugzilla.novell.com/show_bug.cgi?id=372525


           Summary: XmlStringWriter fails for StringWriter without Encoding.
           Product: Mono: Class Libraries
           Version: 1.2.4
          Platform: x86
        OS/Version: Ubuntu
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Sys.XML
        AssignedTo: atsushi at ximian.com
        ReportedBy: bluelive at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


System.Xml.XmlStringWriter has a constructor taking a StringWriter
by default this generates a string containing xml, the xml header uses the
encoding provided by the Encoding property of the StringWriter.
If this property is null .net removes the encoding from the xmlheader.
mono gives a nullpointer exception.


        private class EncodingLessStringWriter : StringWriter
        {
            public override Encoding Encoding
            { get { return null; } }
        }

        // only use this to embed xml into another document that controls the
character encoding (ie. xml or a string)
        public string AsXmlWithoutEncoding()
        {
            StringWriter stringWriter = new EncodingLessStringWriter();
            XmlTextWriter writer = new XmlTextWriter(stringWriter);
            writer.Formatting = Formatting.None;

            XmlDocument doc = new XmlDocument();

            XmlNode n = CreateDomAsXmlNode(doc);
            doc.AppendChild(n);

            doc.Save(writer);

            return stringWriter.GetStringBuilder().ToString();
        }


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