why does the Xdocument give me a utf16 declaration?

Question

i\'m creating a XDocument like this:

XDocument doc = new XDocument(
new XDeclaration(\"1.0\", \"utf-8\", \"yes\"));

when i save the document li

Answer 1

Very good answer using inheritance, just remember to override the initializer

   public class Utf8StringWriter : StringWriter
    {
        public Utf8StringWriter(StringBuilder sb) : base (sb)
        {
        }
        public override Encoding Encoding { get { return Encoding.UTF8; } }
    }

Answer 2

You will need to set the StreamWriter.Encoding to use UTF-8 instead of Unicode (UTF-16)

Seeing as it's not a StreamWriter this answer is only left for posterity.

Answer 3

StringWriter advertises itself as using UTF-16. It's easy to fix though:

public class Utf8StringWriter : StringWriter
{
    public override Encoding Encoding { get { return Encoding.UTF8; } }
}

That should be enough in your particular case. A rather more well-rounded implementation would:

• Have constructors matching those in StringWriter
• Allow the encoding to be specified in the constructor too