A schema validation event occurred and no ValidationEventHandler object was specified. The following example illustrates use of the Validate method. The example then uses the XPathNavigator class to incorrectly modify the typed value of an element in the XML document generating a schema validation error. The example takes the contosoBooks. The Validate method performs infoset augmentation. Specifically, 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.
The following are important notes to consider when using the Validate method. Schema location hints like xsi:schemaLocation or xsi:noNamespaceSchemaLocation are ignored. If schema validation errors occur during validation the XmlDocument becomes partially validated with some nodes with correct type information and some without.
The validation process includes checking for uniqueness and reference constraints xs:ID , xs:IDREF , xs:key , xs:keyref , and xs:unique. The XmlNode object created from an XmlDocument to validate.
Create the XmlSchemaSet variable schemas. An object of the class XmlSchemaSet stores a collection of schemas that an XmlReader can be validated against.
It assigns a new XmlSchemaSet object to variable schemas, and calls this object's Add method to add a schema to the collection. Schema, indicating that we want the XmlReader to perform validation with a schema as it reads an XML document. Again set the XmlReaderSettings object's Schemas property to schemas. This property sets the schema s used to validate the document read by the XmlReader. The ValidationError method is called if the document being read is found to be invalid or an error occurs for example, the document cannot be found.
Failure to register a method with ValidationEventHandler causes an exception XmlException to be thrown when the XML document is found to be invalid or missing. ValidationEventArgs arguments. Create an XmlReader that reads the file selected by the user from the txtfilename TextBox and validates it against the catalog.
Create txtFileName. Text, settings ;. Read ;. Close ;. InitializeComponent ;. View All. I am getting errors then I am trying compile schemaset because the listOfSchemasReferenced may have a lot of unrealated xsd placed in the same folder. While i was looking through the web, i've seen that XmlResolver may be usefull but I am not sure how to use in the context of validation multiple xsd in a context of files placed in a. If you have any ideas how to solve this problem or you have some examples that I could read that would be great.
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