CODEWITHSUNDEEP
.netxmlencoding
knittl
knittl

Reputation: 265131

XmlSerializer omit encoding attribute

Is it possible to instruct .NET's XmlSerializer to serialize XML documents to the following format:

<?xml version="1.0"?>
<!DOCTYPE root SYSTEM "root.dtd">
<root>
...
</root>

i.e. XML declaration without the encoding attribute, doctype and then the rest of the document?

Currently I have:

var bomlessUtf8Encoding = new UTF8Encoding(false);
var serializer = new XmlSerializer(typeof(T));
var namespaces = new XmlSerializerNamespaces();
namespaces.Add(string.Empty, string.Empty);

using (var memoryStream = new MemoryStream())
using (var xmlWriter = XmlWriter.Create(memoryStream, new XmlWriterSettings { Indent = false, Encoding = null }))
{
    xmlWriter.WriteDocType(typeof(T).Name, null, ContentSerializer.MlpSvcInit320Dtd, null);
    serializer.Serialize(xmlWriter, input, namespaces);

    return bomlessUtf8Encoding.GetString(memoryStream.ToArray());
}

but .NET is barking when creating the XmlWriterSettings object due to Encoding being null. Is there a canonical way, or is it easiest to simply serialize to a string and then call .Replace() on it?

Unfortunately, a third party vendor requires the serialized string to be exactly in this format.

Upvotes: 0

Views: 2838

Answers (1)

pmatyszok
pmatyszok

Reputation: 142

XmlTextWriter gets you the possibility of remove encoding attribute. If you pass null as encoding, xml will be encoded using UTF-8, but encoding attribute will be removed.

So something like this:

using(var xmlWriter = new XmlTextWriter(memoryStream, null))

should be suitable. You can also set Indent etc, refer to http://msdn.microsoft.com/pl-pl/library/system.xml.xmltextwriter(v=vs.110).aspx

Upvotes: 1

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