Add Header to WCF Message

Question

How Can I add Header to this Message and take all xml document?

  private Message GetRootMessage()
  {
      var stream = new MemoryStream();
      XmlDictionaryWriter writer =  XmlDictionaryWriter.CreateTextWriter(stream);
      writer.WriteStartDocument();
      writer.WriteStartElement("Body");
      writer.WriteAttributeString("abc", "2012-04-17t10:00:00Z");
      writer.WriteAttributeString("abd", "CA");
      writer.WriteAttributeString("bid", "35353");

      writer.WriteEndElement();   
      writer.WriteEndDocument();
      writer.Flush();
      stream.Position = 0;

      XmlDictionaryReader reader = 
          XmlDictionaryReader.CreateTextReader(
          stream, XmlDictionaryReaderQuotas.Max);
      return Message.CreateMessage(
          MessageVersion.None, "", reader);
  }

Answer 1

IDispatchMessageInspector is you friend here, have a look at this post for ideas.