asp.net XmlTextReader parse XML document instance

XmlTextReader is used for fast forward-only read XML.

The XmlTextReader namespace is:

System.Xml

application Example

The code is as follows

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XmlTextReader reader = new XmlTextReader (xmlfragment, xmlnodetype.element, NULL); while (reader. Read ()) { if (reader. NodeType = = XmlNodeType.Element) { if (reader. Name = = "State") { state = (sendingshipstate) convert.toint32 (reader. ReadString ()); } else if (reader. Name = = "message") { Mymessage.analyzexml (reader. ReadInnerXml ()); } else if (reader. Name = = "Writer") { Writer = reader. ReadString (); } } } Reader. Close ();

XmlTextReader has multiple constructors, parameters can use URLs (URLs or file paths), Stream, TextReader, XML strings, and so on, where XML strings are used.

XmlTextReader is not allowed to rewind, so use reader. Read () reads from the go, and then determines the type of node that is currently being read, note: Whitespace is also a node.

We then judge the label name based on the name attribute value, for example, the <root> Name property value is root.

The code is as follows	Copy Code
Mymessage.analyzexml (reader. ReadInnerXml ());

Here we give all of the XML content under the node to another object for processing.

Take attribute value

code is as follows	copy code
XmlTextReader reader = new XmlTextReader ("Data.xml"); While reader. Read ()) { if (reader). NodeType = = XmlNodeType.Element && reader. Name = = "category") { MessageBox.Show (reader). GetAttribute ("text")); } } Reader. Close ();