Validating xml against a schema sex dating with phone numbers
Register the method Validation Error with the settings object's Validation Event Handler.
The Validation Error method is called if the document being read is found to be invalid or an error occurs (for example, the document cannot be found).
Again set the Xml Reader Settings object's Schemas property to schemas.
This property sets the schema(s) used to validate the document read by the Xml Reader.
The Add method receives as arguments a namespace URI that identifies the schema ( and the name and location of the schema file (in the current directory).
The XML Schema specifications XML Schema Part 1: Structures and XML Schema Part 2: Datatypes from the W3C Web site are used for validation.Failure to register a method with Validation Event Handler causes an exception (Xml Exception) to be thrown when the XML document is found to be invalid or missing.After setting the Validation Type property, the Schema's property and Validation Event Handler of the Xml Reader Settings object, we are ready to create a validating Xml Reader.This program validates the XML document against the schema successfully.However, when the user selects the XML document catalog1.xml, validation fails for the book element in the lines containing more than one title element.
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HTML browsers are allowed to display HTML documents with errors (like missing end tags). A "well formed" XML document is not the same as a "valid" XML document. In addition, it must conform to a document type definition.