You need to choose a class to verify that an XML document is well formed and that the document validates against a schema.

Which class should you choose?

The XmlReader class provides a noncached, forward-only, read-only access to XML data over an XML stream. Although functionality is somewhat limited, it provides excellent performance for validating a document against an XML schema.

XmlResolver resolves XML resource names. XmlReader would use it, but it does not provide the same functionality.