XML Serialization with .NET

Question

Hello,

I'm tryng to serialize an object to XML by using C# with the following code:

            memoryStream = new System.IO.MemoryStream();
            Serializer.Serialize(memoryStream, this);
            memoryStream.Seek(0, System.IO.SeekOrigin.Begin);
            streamReader = new System.IO.StreamReader(memoryStream);
            return streamReader.ReadToEnd();

My problem is that this produce the following output in the part of the document:

<?xml version="1.0"?>

And I want to have the following:

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

Does anybody know how to include both the "encoding" and "standalone" attribute?

I saw this, but it seems that is not producing the output I need.

Thanks!

Answer 1

Is this tagged as serializable? If yes do you have the properties you want public? Maybe you should also post your source of (this)

Here is a good starting point: LINK

Answer 2

Try following

MyClass instance = new MyClass ();
// fill instance 

XmlSerializer serializer = new XmlSerializer (typeof (MyClass));
XmlWriterSettings settings = new XmlWriterSettings ();
settings.OmitXmlDeclaration = true;
settings.Encoding = Encoding.UTF8;
// next two settings are optional
settings.Indent = true;
settings.IndentChars = "    ";

using (XmlWriter writer = XmlWriter.Create ("test.xml", settings)) {
    writer.WriteRaw ("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\r\n");
    serializer.Serialize (writer, instance);
}

UPDATED: By the way if you don't want to have

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"

as attribute of the root elements in the XML file and have no namespaces at all you produce you can use [XmlRoot(Namespace="")] as atribute of your calss MyClass and replace line

serializer.Serialize (writer, instance);

with the lines

XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces ();
namespaces.Add (string.Empty, string.Empty);
serializer.Serialize (writer, instance, namespaces);