Validating xml without namespace
You can also perform read-only validation of XML content using the XPath Document class. The Validity property can be used to determine whether or not an individual attribute or element is valid when accessing attributes or elements with the XPath Navigator. The XML document is validated successfully as it is loaded without generating any schema validation errors or warnings. The Xml Document class does not validate an XML document using either DTD or XML schema definition language (XSD) schema validation by default. Note When an XML document is loaded into an Xml Document object with an associated schema that defines default values, the Xml Document object treats these defaults as if they appeared in the XML document. The example then makes two modifications to the XML document that are invalid according to the schema. A plugin called xml tools is also free to download.One feature of the plugin is the ability to validate XML against an XSD.The second way is to validate a previously untyped XML document using the Validate method of the Xml Document class. Load(reader) Dim navigator As XPath Navigator = document. The Xml Document object reports schema validation errors and warnings using the Validation Event Handler delegate passed as a parameter to the Validate method. In both cases, changes to the validated XML document can be revalidated using the Validate method of the Xml Document class. The following example validates the Imports System Imports System. A validating Xml Reader object is created by passing an Xml Reader Settings object to the Create method of the Xml Reader class that takes an Xml Reader Settings object as a parameter. XPath Class Validating Reader Example Shared Sub Main(By Val args() As String) Try Dim settings As Xml Reader Settings = New Xml Reader Settings() settings.
Because the XPath Document class is a read-only class, XPath Navigator object's returned from XPath Document objects cannot edit the XML document contained in the XPath Document object.
It only verifies that the XML document is well formed. Message) End Try End Sub Shared Sub Schema Validation Handler(By Val sender As Object, By Val e As Validation Event Args) Select Case e. This means that the Is Empty Element property always returns The Validate method of the Xml Document class validates the XML document contained in an Xml Document object against the schemas specified in the Xml Document object's Schemas property and performs infoset augmentation. XPath Class Validate Example Shared Sub Main(By Val args() As String) Dim document As Xml Document = New Xml Document() document. Add(" "contoso Books.xsd") Dim validation As Validation Event Handler = New Validation Event Handler(Address Of Schema Validation Handler) document. The first modification inserts an invalid child element resulting in a schema validation error, and the second modification sets the value of a typed node to a value that is invalid according to the type of the node resulting in an exception.
The first way to validate an XML document is to validate the document as it is loaded into an Xml Document object using a validating Xml Reader object. Create("contoso Books.xml", settings) Dim document As Xml Document = New Xml Document() document. The result is a previously untyped XML document in the Xml Document object replaced with a typed document. Load("contoso Books.xml") Dim navigator As XPath Navigator = document. Validate(validation) End Sub Shared Sub Schema Validation Handler(By Val sender As Object, By Val e As Validation Event Args) Select Case e.
Load(reader) Dim navigator As XPath Navigator = document.
Create("contoso Books.xml", settings) Dim document As Xml Document = New Xml Document() document.
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Both the XPath Document class and the Xml Document class create XPath Navigator objects to navigate and edit XML documents.