XmlReader.Read Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
When overridden in a derived class, reads the next node from the stream.
Assembly: System.Xml (in System.Xml.dll)
Return Value
Type: System.Booleantrue if the next node was read successfully; false if there are no more nodes to read.
| Exception | Condition |
|---|---|
| XmlException | An error occurred while parsing the XML. |
When an XmlReader is first created and initialized, there is no information available. You must call Read to read the first node.
This method requires at least four bytes from the data stream in order to begin parsing. If fewer than four bytes are returned and there is no more data in the stream, the method will fail. If there is more data in the stream, the method will block parsing until receipt of the fourth byte.
The following example navigates through the stream to determine the current node type, and then uses XmlWriter to output the XmlReader content.
StringBuilder output = new StringBuilder(); String xmlString = @"<?xml version='1.0'?> <!-- This is a sample XML document --> <Items> <Item>test with a child element <more/> stuff</Item> </Items>"; // Create an XmlReader using (XmlReader reader = XmlReader.Create(new StringReader(xmlString))) { XmlWriterSettings ws = new XmlWriterSettings(); ws.Indent = true; using (XmlWriter writer = XmlWriter.Create(output, ws)) { // Parse the file and display each of the nodes. while (reader.Read()) { switch (reader.NodeType) { case XmlNodeType.Element: writer.WriteStartElement(reader.Name); break; case XmlNodeType.Text: writer.WriteString(reader.Value); break; case XmlNodeType.XmlDeclaration: case XmlNodeType.ProcessingInstruction: writer.WriteProcessingInstruction(reader.Name, reader.Value); break; case XmlNodeType.Comment: writer.WriteComment(reader.Value); break; case XmlNodeType.EndElement: writer.WriteFullEndElement(); break; } } } } OutputTextBlock.Text = output.ToString();