Non validating xml dom parser

Even a non-validating parser has to do some relatively resource-intensive validation work.

When performance is the primary goal, a compromise must be reached between performance and conformance.

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As a result, typed XML data replaces previously untyped XML data.

After successful validation, schema defaults are applied, text values are converted to atomic values as necessary, and type information is associated with validated information items.

In this example, the XML document is not validated as it is loaded into the DOM, but rather is validated after it has been loaded into the DOM using the Validate method of the Xml Document class.

The example below is similar to the example in "Validating an XML Document As It Is Loaded into the DOM" above.

Inner Xml = "A" Dim price Nodes As Xml Node List = document. Select Single Node("/bk:bookstore/bk:book/bk:price", manager) Console.

Finally, one of the errors is corrected, and then part of the XML document is partially validated. Load("contoso Books.xml") ' Add the XML schema for the XML document to the ' Schemas property of the Xml Document. Dim manager As Xml Namespace Manager = New Xml Namespace Manager(document. Add Namespace("bk", " Dim price Node As Xml Node = document.

Finally, one of the errors is corrected, and then part of the XML document is partially validated.

The last book ' element is invalid, but not included in validation. Select Single Node("/bk:bookstore/bk:book", manager) document. Validate(Address Of Validation Event Handler, book Node) Catch ex As Xml Exception Console.

Message) End Try End Sub Shared Sub Validation Event Handler(By Val sender As Object, By Val args As Validation Event Args) If args. Invalid modifications are then made to the XML document, and the document is then revalidated, causing schema validation errors. Dim document As Xml Document = New Xml Document() document. Add(" "contoso Books.xsd") ' Validate the XML document loaded into the DOM. Validate(Address Of Validation Event Handler) ' 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 validation to the console.

The Validate method validates the XML document against the XML schemas contained in the Schemas property of the Xml Document. Schema Class Xml Document Validation Example Shared Sub Main() Try ' Create a new Xml Document instance and load ' the XML document into the DOM.

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.

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