XmlTextReader Constructor (Stream, XmlNodeType, XmlParserContext)
Initializes a new instance of the XmlTextReader class with the specified stream, XmlNodeType, and XmlParserContext.
Namespace: System.Xml
Assembly: System.Xml (in System.Xml.dll)
public XmlTextReader(
Stream xmlFragment,
XmlNodeType fragType,
XmlParserContext context
)
Parameters
- xmlFragment
- Type: System.IO.Stream
The stream containing the XML fragment to parse.
- fragType
- Type: System.Xml.XmlNodeType
The XmlNodeType of the XML fragment. This also determines what the fragment can contain. (See table below.)
- context
- Type: System.Xml.XmlParserContext
The XmlParserContext in which the xmlFragment is to be parsed. This includes the XmlNameTable to use, encoding, namespace scope, the current xml:lang, and the xml:space scope.
| Exception | Condition |
|---|---|
| XmlException | fragType is not an Element, Attribute, or Document XmlNodeType. |
| ArgumentNullException | xmlFragment is null. |
 Note |
|---|
In the .NET Framework 2.0 release, the recommended practice is to create XmlReader instances using the XmlReader.Create method. This allows you to take full advantage of the new features introduced in this release. For more information, see Creating XML Readers. |
This constructor parses the given string as a fragment of XML. If the XML fragment is an element or attribute, you can bypass the root level rules for well-formed XML documents.
The following table lists valid values for fragType.
XmlNodeType | Fragment May Contain |
|---|---|
Element | Any valid element content (for example, any combination of elements, comments, processing instructions, CDATA sections, text, and entity references). An XML declaration can also be supplied. This allows you to specify the encoding for the XML fragment, rather than having to set it on the XmlParserContext object. |
Attribute | The value of an attribute (the part inside the quotes). |
Document | The contents of an entire XML document. This enforces document level rules. |
The reader uses the following to determine the encoding of the stream.
Checks the XmlParserContext.Encoding property to determine the encoding.
If the Encoding property is null, the reader checks for a byte-order mark at the beginning of the stream.
If the Encoding property is null, and no byte-order mark is found, the reader assumes the stream is encoded in UTF-8.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
