Use the ReadState property to check whether the reader is in error state. For example, the reported node type may be different from the actual node type of the current node. After an exception is thrown, the state of the reader is not predictable. XmlReader throws an XmlException on XML parse errors. See the Create reference page for details. If you don't use a object, default settings are used. You can also easily add features to an existing reader. You can use a single object to create multiple readers with the same functionality, or modify the object to create a new reader with a different set of features. To specify the set of features you want to enable on the XML reader, pass an object to the Create method. If you must expand entities on request, you don't want your text content normalized, or you don't want default attributes returned, use the XmlTextReader class. (However, this class doesn't support DTD or schema validation.) When you want to read an XML DOM subtree from an XmlNode object, use the XmlNodeReader class. NET Framework provides concrete implementations of the XmlReader class, such as the XmlTextReader, XmlNodeReader, and the XmlValidatingReader classes, we recommend that you use the specialized classes only in these scenarios: Use the Create method to create an XmlReader instance.Īlthough the. You can also set properties in advance to manage how the XML stream is processed (for example, normalization).Ĭreating an XML reader Validating XML data Data conformance Navigating through nodes Reading XML elements Reading XML attributes Reading XML content Converting to CLR types Asynchronous programming Security considerations The client can skip items and process those that are of interest to the application. Supports multiple input streams and layering.Įnables the client to give the parser a buffer into which the string is directly written, and thus avoids the necessity of an extra string copy. Simplifies state management by a natural, top-down procedural refinement. XmlReader uses a pull model to retrieve data. XmlReader also provides data conformance checks and validation against a DTD or schema. For example, the property is set to ReadState.Initial by the XmlReader.Read method and ReadState.Closed by the XmlReader.Close method.
The ReadState property value indicates the current state of the XML reader. The properties of the class reflect the value of the current node, which is where the reader is positioned. XmlReader methods let you move through XML data and read the contents of a node. This class conforms to the W3C Extensible Markup Language (XML) 1.0 (fourth edition) and the Namespaces in XML 1.0 (third edition) recommendations. XmlReader provides forward-only, read-only access to XML data in a document or stream. Using (XmlReader reader = XmlReader.Create(stream, settings))Ĭonsole.WriteLine("Start Element ", XmlReaderSettings settings = new XmlReaderSettings() async Task TestReader(System.IO.Stream stream)
#BEST FREE XML READER HOW TO#
The following example code shows how to use the asynchronous API to parse XML.
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