Validating xml data with xmlreader

When you call the Xml Validating Reader's Read method, the method—in addition to jumping from one node to the next—checks the structure of the node and the node's attributes against the specified validation type.

There are some known limitations regarding the XML data consumptions and this article will try to address one of them and will offer a solution to overcome it.You validate XML data against an XML schema to ensure that any XML data that you import to or export from one or more cells in a mapped range in a worksheet conforms to the XML schema in the XML Source task pane.Note: This option does not validate data when you enter data in mapped cells.The Xml Document class does not validate an XML document using either DTD or XML schema definition language (XSD) schema validation by default. 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. 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. If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site.

314

Leave a Reply