C# – Why is the XmlWriter always outputting utf-16 encoding

cxml-serializationxmlwriter

I have this extension method

    public static string SerializeObject<T>(this T value)
    {
        var serializer = new XmlSerializer(typeof(T));           
        var settings = new XmlWriterSettings
                       {
                        Encoding = new UTF8Encoding(true), 
                        Indent = false, 
                        OmitXmlDeclaration = false,
                        NewLineHandling = NewLineHandling.None
                       };

        using(var stringWriter = new StringWriter()) 
        {
            using(var xmlWriter = XmlWriter.Create(stringWriter, settings)) 
            {
                serializer.Serialize(xmlWriter, value);
            }

            return stringWriter.ToString();
        }
    }

but whenever I call this it has an encoding of utf-16 specified, ie <?xml version="1.0" encoding="utf-16"?>. What am I doing wrong?

Best Answer

Strings are UTF-16, so writing to a StringWriter will always use UTF-16. If that's not what you want, then use some other TextWriter derived class, with the encoding you like.

Related Solutions

C# – How to put an encoding attribute to xml other that utf-16 with XmlWriter

You need to use a StringWriter with the appropriate encoding. Unfortunately StringWriter doesn't let you specify the encoding directly, so you need a class like this:

public sealed class StringWriterWithEncoding : StringWriter
{
    private readonly Encoding encoding;

    public StringWriterWithEncoding (Encoding encoding)
    {
        this.encoding = encoding;
    }

    public override Encoding Encoding
    {
        get { return encoding; }
    }
}

(This question is similar but not quite a duplicate.)

EDIT: To answer the comment: pass the StringWriterWithEncoding to XmlWriter.Create instead of the StringBuilder, then call ToString() on it at the end.

C# – Reading inner list only with LinqToXml

It should be something like:

var result = from artist in xartists.Root.Elements("artist")
             where artist.Attribute("name").Value.Equals(id)
             let albums = artist.Element("albums")
             from album in albums.Elements("album")
             select new MusicAlbum
             {
                 Title = album.Attribute("title").Value,
                 Year = (int) album.Attribute("year")
             };

Note in particular the use of Element/Elements instead of Descendents

Best Answer

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C# – How to put an encoding attribute to xml other that utf-16 with XmlWriter

C# – Reading inner list only with LinqToXml

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