Validating xml data with xmlreader
If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site. Using the Xml Document class, you can validate the XML content contained in an Xml Document object in two ways. If a Validation Event Handler is set on the validating Xml Reader, the Validation Event Handler will get called whenever an invalid type is encountered. Message) Exit Sub End Select End Sub End Class After modifications are made to an XML document, you can validate the modifications against the schema for the XML document using the Validate method of the Xml Document class. 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.
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.To make sure that the data that you enter conforms to any enumerations that are defined in the mapped schema, you may need to further validate the data by using the Data Validation command in the Data Tools group on the Data tab.For more information, see XML Schema Definition (XSD) data type support and Prevent invalid data entry in a worksheet.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. Allow Xml Attributes | Xml Schema Validation Flags. Create(new String Reader( @": Thanks , if i want to add more elements to my string , and check in that case how to add tose elements, Becuase my string may contain more elements user can give some more i create schema automatically by reading my string.
Process Inline Schema | Xml Schema Validation Flags.
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.
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.
Thus, users found it very hard to identify what the problem is.
To overcome this problem, the user can validate the xml data against the annotated xsd schema before doing the bulk load operation.
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.