For examples illustrating the Validation Event Handler, see "Validating an XML Document As It Is Loaded into the DOM" and "Validating an XML Document in the DOM" above. Message) End Try End Sub Shared Sub Validation Event Handler(By Val sender As Object, By Val args As Validation Event Args) If args. Schema validation warnings are not reported unless the Report Validation Warnings flag is specified to the Xml Reader Settings object.Schematron is a useful and accessible supplement to other schema languages.The open-source XSLT implementation is based around a core framework which is open for extension and customisation.The Xml Document class does not validate the XML in the Document Object Model (DOM) against an XML Schema definition language (XSD) schema or document type definition (DTD) by default; the XML is only verified to be well-formed. To validate the XML in the DOM, you can validate the XML as it is loaded into the DOM by passing a schema-validating Xml Reader to the Load method of the Xml Document class, or validate a previously unvalidated XML document in the DOM using the Validate method of the Xml Document class.
Invalid modifications are made to the XML document and the document is then revalidated, causing schema validation errors. Dim settings As Xml Reader Settings = New Xml Reader Settings() settings. Note The XML data is loaded into the DOM despite schema validation errors unless your Validation Event Handler raises an exception to stop the process. If a Validation Event Handler was assigned to the Xml Reader Settings instance, or passed to the Validate method of the Xml Document class, the Validation Event Handler will handle schema validation errors; otherwise an Xml Schema Validation Exception is raised when a schema validation error is encountered.As a result, typed XML data replaces previously untyped XML data. Load(reader) ' Make an invalid change to the first and last ' price elements in the XML document, and write ' the Xml Schema Info values assigned to the price ' element during load validation to the console. To create an XML schema-validating Xml Reader, follow these steps. Dim manager As Xml Namespace Manager = New Xml Namespace Manager(document. Add Namespace("bk", " Dim price Node As Xml Node = document.