.Net's XmlElement doesn't encode apos and quot?

class C {
  [XmlElement("txt")]
  public string Txt {get; set;}
}

When serializing the above with ' " & < >, the output is ' " & < >

Why 开发者_如何学Goisn't ' and " encoded to ' and "?

Quotes must be encoded within attributes, its not required when inside an XML element text.