If you do not need data validation, the ability to resolve general entities, or support for default attributes, use XmlTextReader. The current implementation only supports XmlTextReader. XmlResolver property sets the XmlResolver object to use for resolving external resources. This determines what the fragment can contain see table below. This includes the XmlNameTable to use, encoding, namespace scope, the current xml: The following table lists valid values for fragType and how the reader parses each of the different node types.
ValidationType is What does xmlvalidatingreader class do to ValidationType. Auto the XmlParserContext specified in the constructor must supply all the necessary DocumentType information.
Schemas property to specify the XmlSchemaCollection containing the schemas that is, the XmlParserContext does not need to supply the DocumentType information. This also determines what the fragment string can contain see table below. This includes the NameTable to use, encoding, namespace scope, the current xml: The reader normalizes What does xmlvalidatingreader class do individual text node independently from the content of adjacent entity reference nodes.
When EntityHandling is set to ExpandEntities the "doc" element node contains one text node with the expanded entity text:. WhitespaceHandling is set to Significant or All, the "doc" element expands the character entity and returns the general entity as a node:. Changing the state of the returned reader for example, calling one of the read methods can lead to unpredictable results.
If the XmlSchemaCollection includes an XML schema XSD which contains include or import elements that reference other namespaces, the schemas for these other namespaces are loaded for validation purposes only.
Unless these schemas were explicitly added to the schema collection, they will not be accessible using any of the collection methods or properties. For example, if the collection contains the schema file a. For more information, refer to the conceptual topic at MSDN: If DTD validation is being performed this property returns null.
XmlSchemaDatatype is returned if the current element, or attribute, is a simple type which can specify special validation constraints on the simple types, like min and max. XmlSchemaSimpleType is returned if the current element, or attribute, is a user defined simpleType.
XmlSchemaComplexType is returned if the current element is a user defined complexType. This type cannot be returned by attributes. When the reader is positioned on the name element, you can use this property to find that it is in the scope of a US English xml: The reader uses the XmlUrlResolver by default. However, if you have implemented a custom XmlResolveryou can specify the use of your custom XmlResolver instead.
This What does xmlvalidatingreader class do can be set at any time and takes affect after the "What does xmlvalidatingreader class do" XmlValidatingReader.
If this property is set to nullthe reader assumes the user is not interested in resolving external references. In this case, the reader only validates against internal resources, if the resource is present. The index is zero-based.
The first attribute has index 0. You can lookup the dt: "What does xmlvalidatingreader class do" can also get this information using the XmlValidatingReader.
To match the default namespace, pass an empty string. This string does not have to be atomized. For example, suppose you have the following XML: EntityHandling is set to ExpandCharEntitiesthe following C code returns the attribute value as two text nodes and one entity reference node:.
This method cannot handle any markup child elements, comments, processing instructions, and so on What does xmlvalidatingreader class do the name element, but it can concatenate multiple adjacent text and CDATA blocks. If positioned on a text node, ReadString performs the same concatenation from the text node to the element end tag.
If the reader is positioned on an attribute text node, ReadString has the same functionality as if the reader were position on the element start tag. It returns all the concatenated element text nodes. EntityHandling property determines how ReadString works as follows:. If the reader is an XmlValidatingReaderthis method also validates the skipped content. If no event handler is provided an XmlException is thrown on the first validation error Severity is equal to XmlSeverityType.
The callback handler can use the ValidationEventArgs. Severity property to guarantee that an XML instance document is validated against a schema. The Severity property allows you to distinguish between validation errors Severity is equal to XmlSeverityType.
Error thatindicates a fatal error, and validation warnings Severity is equal to XmlSeverityType. Warning that indicates that no schema information is available. Gets the number of attributes on the current node. Gets the base URI of the current node. Gets a value indicating whether this reader can parse and resolve entities.
Gets the depth of the current node in the XML document. Read-write Gets or sets a value that specifies how the reader handles entities. Gets a value indicating whether the reader is positioned at the end of the stream. Read-only See base class member description: HasAttributes Gets a value indicating whether the current node has any attributes.
Gets a value indicating whether the current node can have a XmlValidatingReader. Gets a value indicating whether the current node is an attribute that was generated from the default value defined in the DTD or schema. Gets the value of the attribute with the specified index.