Editor.MainWindow.WriteLevel C# (CSharp) Method

        public void WriteLevel(XmlWriter writer)
        {
            writer.WriteStartDocument();
             foreach (Level level in this.lstLevel.Items)
            level.ToXML(writer);

             writer.WriteStartElement("physics");
             foreach (Item p in this.lstPhysics.Items)
            p.ToXML(writer);
             writer.WriteEndElement();
             writer.WriteStartElement("actors");
             foreach (Item p in this.lstActors.Items)
            p.ToXML(writer);

             writer.WriteEndElement();
             writer.WriteEndDocument();
             writer.Close();
        }