Type Reason InvalidOperationException The XmlTextWriter.WriteState is WriteState.Closed.
In the dnprdnext release, the recommended practice is to create System.Xml.XmlWriter instances using the erload:System.Xml.XmlWriter.Create method and the System.Xml.XmlWriterSettings class. This allows you to take full advantage of all the new features introduced in this release. For more information, see Creating XML Writers.
This method does not escape special characters.
The System.Xml.XmlTextWriter does not validate any data that is passed to the XmlTextWriter.WriteRaw(string) method. You should not pass arbitrary data to this method.