Validating xml data with xmlreader
For the purposes of this paper let's establish a simple XML contact list sample that we can use throughout our discussion. For example you can do the following: Compare this to W3C DOM, in which the XML document is used as a logical container for the XML tree.
This section details how to program with LINQ to XML independent of Language-Integrated Query. In DOM XML nodes, including elements and attributes, must be created in the context of an XML document.
Allow Xml Attributes; // Set the validation settings. Validation Event Handler = On Validation Event Handler; // Create the Xml Reader object. Create(_xml File Path, settings); // Parse the file.
Michael Champion February 2007 Applies to: Visual Studio Code Name "Orcas" .
It takes advantage of standard query operators and adds query extensions specific to XML.
From an XML perspective, LINQ to XML provides the query and transformation power of XQuery and XPath integrated into .
LINQ to XML uses modern language features (e.g., generics and nullable types) and diverges from the DOM programming model with a variety of innovations to simplify programming against XML. LINQ to XML supports this approach to constructing an XML tree but also supports an alternative approach referred to as functional construction.
LINQ to XML is a modernized in-memory XML programming API designed to take advantage of the latest . It provides both DOM and XQuery/XPath like functionality in a consistent programming experience across the different LINQ-enabled data access technologies.
We will go in more depth on LINQ to XML’s query capability in the section titled "Querying XML With LINQ to XML." Just as significant as the Language-Integrated Query capabilities of LINQ to XML is the fact that LINQ to XML represents a new, modernized in-memory XML Programming API.
LINQ to XML was designed to be a cleaner, modernized API, as well as fast and lightweight. Append Child(contacts); This style of coding provides few clues to the structure of the XML tree.
There are two major perspectives for thinking about and understanding LINQ to XML.
From one perspective you can think of LINQ to XML as a member of the LINQ Project family of technologies with LINQ to XML providing an XML Language-Integrated Query capability along with a consistent query experience for objects, relational database (LINQ to SQL, LINQ to Data Set, LINQ to Entities), and other data access technologies as they become LINQ-enabled.
Its public data model is aligned as much as possible with the W3C XML Information Set. In LINQ to XML you create XML elements directly: You do not have to create an XML Document to hold the XML tree.