Changes the XmlReader.ReadState to Closed.
In the dnprdnext release, the recommended practice is to create System.Xml.XmlReader instances using the erload:System.Xml.XmlReader.Create method. This allows you to take full advantage of the new features introduced in this release. For more information, see Creating XML Readers.
This method also releases any resources held while reading. If this reader was constructed using a stream, this method also calls Close on the underlying stream.
If Close has already been called, no action is performed.