Advances the System.Xml.XmlReader to the next descendant element with the specified qualified name.
true if a matching descendant element is found; otherwise false. If a matching child element is not found, the System.Xml.XmlReader is positioned on the end tag (XmlReader.NodeType is XmlNodeType.EndElement) of the element.
If the System.Xml.XmlReader is not positioned on an element when XmlReader.ReadToDescendant(string) was called, this method returns false and the position of the System.Xml.XmlReader is not changed.