Validating xml data with xmlreader
Set the Xml Reader Settings object's Validation Type property to the value Validation Type.Schema, indicating that we want the Xml Reader to perform validation with a schema as it reads an XML document.There may or may not be default Entity Resolver implementations that do simple things (like: look in a single directory or download from the URI as a http url), but in my experience I always had to code an Entity Resolve one way or another.
I have kept the xsd file in the same dir as of the xml file.
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.
The first way is to validate the XML content using a validating Xml Reader object and the second way is to use the Validate method of the Xml Document class. An Xml Schema Exception will be thrown when an attribute or element with Typed Value set to is accessed by the XPath Navigator. The following example validates the file as it is loaded into the Xml Document object by creating the Xml Document object using a validating Xml Reader object.
You'd normally need to supply a Resolver (google Entity Resolver) which tells the parser where to find the externally referenced documents.
Yes, you could let the resolver take the location info directly from the namespace URI (but this is not recommended; I think I remember some XBRL taxonomies use this approach IIRC).Again set the Xml Reader Settings object's Schemas property to schemas.This property sets the schema(s) used to validate the document read by the Xml Reader.There are use cases where the schema Location attribute is useful.