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A better way to query for a single node
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| Total Hit (2583) |
In the XmlNode class, that is the class that provides node functionality in an XMLDOM representation of an XML document, the SelectNodes (and the ancillary SelectSingleNode) method exploits the XPath query language to let you extract nodes based on logical conditions. The SelectNodes methods return
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Handle child XML nodes with care
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| Total Hit (2711) |
When you work with XML documents loaded into an XmlDocument class, you often need to examine the contents of child nodes. The XMLDOM programming interface purposedly provides the ChildNodes property. In the .NET XmlDocument class, ChildNodes returns an internal object of type XmlChildNodes. (The obj
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Creating an XML Document with the XMLTextWriter Class
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| Total Hit (2881) |
To quickly create a new XML document you can use the XMLTextWriter class. There are many ways to create XML in the .NET Framework, but the XMLTextWriter is one of the quickest.
«Code LangId=2»
Dim mywriter As System.Xml.XmlTextWriter
mywriter = New System.Xml.XmlTextWriter("c:\myxml.xml", Not
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How do I read/write objects into xml?
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| Total Hit (1118) |
This topic describes how to automatically map a particular XML stream into a set of objects designed to hold the XML using the XML Serialization classes.
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How do I create classes from an XSD schema?
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| Total Hit (1061) |
This topic describes how to create classes that can be used to read and write XML that is defined by an XML Schema Description (XSD) file. Once you understand how to generate the classes for your XSD schema, you should read the "How Do I Read and Write Objects From XML?" topic to find out how to act
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How do I create an XML Schema Definition (XSD) File From a Class?
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| Total Hit (1102) |
This topic describes how to build an XSD file for classes that you save and load from XML using the XML Serialization classes. The XML Serialization classes allow you to serialize an object as XML . Often you will start with an XML Schema Definition (XSD) file, and use the XSD.exe tool to build the
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XML in the .NET Framework
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| Total Hit (1200) |
Extensible Markup Language (XML) is a meta-markup language that provides a format for describing structured data. XML enables a new generation of Web-based data viewing and manipulation applications. XML is the universal language for data on the Web. XML gives developers the power to deliver structu
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How Do I...Read XML from a file?
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| Total Hit (1019) |
This sample illustrates how to read XML from a file using the XmlTextReader class. This class provides direct parsing and tokenizing of XML, and implements the W3C Extensible Markup Language (XML) 1.0 and the Namespaces in XML specifications.
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How Do I...Read XML data from a stream?
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| Total Hit (1081) |
This sample illustrates how to read XML from a stream using the XmlTextReader class. The stream could have come from a variety of sources such as a byte stream from a server, a file, or from a TextReader.
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How Do I...Write XML to a file?
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| Total Hit (992) |
This sample illustrates how to write XML to a file using the XmlTextWriter class. The writer provides a fast, forward-only way of generating XML and helps you to build XML documents that conform to the W3C Extensible Markup Language (XML) 1.0 and the Namespaces in XML specifications. The XmlTextWrit
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How Do I...Apply validation when reading XML?
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| Total Hit (1086) |
This sample illustrates how to apply validation when reading and parsing XML data using the XmlValidatingReader class. Validation is the process of enforcing rules on the XML content either via a Document Type Definition (DTD) or a schema. At it's simplest, a schema is an XML representation of a DTD
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How Do I...use multiple XmlReaders
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| Total Hit (1097) |
In some situations, you may have one reader that reads part of an XML document, and one or more other readers that read the rest of the document. For example, an e-commerce ordering system may have orders submitted as XML documents. In processing these orders, one reader may process information at t
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How Do I...Load and use the XmlDocument (W3C DOM)?
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| Total Hit (1089) |
How Do I...Load and use the XmlDocument (W3C DOM)?
This sample illustrates the classes which implement:
«LI»the Document Object Model (Core) Level 1 the World Wide Web Consortium (W3C) Document Object Model (DOM) Level 1 Specification.
«LI»the Document Object Model Core in the W3C Document Ob
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How Do I...Handle Events from XmlDocument?
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| Total Hit (967) |
This sample illustrates how to receive and handle events when nodes in an XML document change. In particular, this sample demonstrates how to catch the NodeChanged and NodeInserted events described in the following paragraphs.
Modifying an XmlDocument can result in one or more of the following e
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How Do I...Use an XmlNodeReader?
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| Total Hit (1078) |
This sample illustrates how to create and use an XmlNodeReader. An XmlNodeReader is a reader that provides fast, non-cached, forward-only access to XML data in an XmlNode. It has the ability to read an entire XML DOM tree or read from just a subtree. However, the XmlNodeReader does not support Docum
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How Do I...Load XML data into an XmlDataDocument?
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| Total Hit (1047) |
This sample illustrates how to load XML into the XmlDataDocument class. This class extends the XmlDocument class, allowing structured data to be stored, retrieved, and manipulated through the DataSet class, which provides a relational view onto the loaded XML data. This affiliation between the XmlDo
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How Do I...Navigate XML with the XPathNavigator?
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| Total Hit (1099) |
This sample illustrates how to navigate XML documents with an XPathNavigator created from an XPathDocument. It also demonstrates how to use an XPathNodeIterator. The XPathNavigator class provides a cursor-style model to navigate an XML document. This topic also introduces XML Path Language (XPath) e
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How Do I...Query XML with an XPath expression?
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| Total Hit (1081) |
This sample illustrates how to query an XPathDocument with an W3C XML Path Language (XPath) expression supplied to the XPathNavigator class. The XPathNavigator class is only for read-only XPath queries over a document and, for Extensible Stylesheet Language Transformations (XSLT) processing, is impl
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How Do I...Apply an XSL Transformation to XML?
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| Total Hit (1084) |
This sample illustrates how to apply an Extensible Stylesheet Language Transformations (XSLT) file to an XML document using the XslTransform class. This class implements the World Wide Web Consortium (W3C) W3C XSL Transformations (XSLT) version 1.0 specification. (For further reference, you might wa
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How Do I...Use an XPathExpression class?
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| Total Hit (1144) |
This sample illustrates how to use an XPathExpression class to compile an XML Path Language (XPath) expression to select a node-set from an XML file. Then the sample demonstrates how to add a custom sort routine and use an XPathExpression to sort the elements returned by the compiled XPath. Finally,
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How Do I...Create DataSet mappings from an XSD schema?
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| Total Hit (1031) |
This sample illustrates how to create DataSet mappings from a supplied XML Schema Definition language (XSD) schema. Generally, schemas are metadata, or data about data, but XSD schemas also cover the relationships between data types. From a schema, you can create a relational structure of tables and
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How Do I...Load a DataSet with XML?
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| Total Hit (1079) |
This sample illustrates how to load a DataSet with XML Data. The sample builds on the topic, How Do I...Create DataSet mappings from an XSD schema?, by first loading XML data into an XmlDataDocument and then accessing this data from the DataSet. The DataSet has previously loaded a schema in order to
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How Do I...Infer DataSet mappings from XML?
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| Total Hit (1025) |
This sample illustrates how to create DataSet mappings from XML Data. This sample uses the concept of inference, whereby the actual structure of the XML data itself is the basis for a relational schema. The sample then creates a relational structure of tables and columns to store data in a DataSet t
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