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XmlReader.Create Method (TextReader, XmlReaderSettings, XmlParserContext)

Creates a new XmlReader instance using the specified TextReader, XmlReaderSettings, and XmlParserContext objects.

Namespace: System.Xml
Assembly: System.Xml (in system.xml.dll)

public static XmlReader Create (
	TextReader input,
	XmlReaderSettings settings,
	XmlParserContext inputContext
)
public static XmlReader Create (
	TextReader input, 
	XmlReaderSettings settings, 
	XmlParserContext inputContext
)
public static function Create (
	input : TextReader, 
	settings : XmlReaderSettings, 
	inputContext : XmlParserContext
) : XmlReader
Not applicable.

Parameters

input

The TextReader from which to read the XML data. Because a TextReader returns a stream of Unicode characters, the encoding specified in the XML declaration is not used by the XmlReader to decode the data stream.

settings

The XmlReaderSettings object used to configure the new XmlReader instance. This value can be a null reference (Nothing in Visual Basic).

inputContext

The XmlParserContext object that provides the context information required to parse the XML fragment. The context information can include the XmlNameTable to use, encoding, namespace scope, the current xml:lang and xml:space scope, base URI, and document type definition.

This value can be a null reference (Nothing in Visual Basic).

Return Value

An XmlReader object to read XML data.

Exception typeCondition

ArgumentNullException

The input value is a null reference (Nothing in Visual Basic).

ArgumentException

The XmlReaderSettings.NameTable and XmlParserContext.NameTable properties both contain values. (Only one of these NameTable properties can be set and used).

By default an XmlUrlResolver with no credentials is used to access any external resources such as a document type definition (DTD), entities, schemas, and so on. If the external resource is located on a network resource that requires authentication, use the XmlReaderSettings.XmlResolver property to specify an XmlResolver with the necessary credentials.

Security noteSecurity Note:

You can use one of the following methods to control which resources the XmlReader can access:

Restrict the resources that the XmlReader can access by setting the XmlResolver property to an XmlSecureResolver object.

-or-

Do not allow the XmlReader to open any external resources by setting the XmlResolver property to a null reference (Nothing in Visual Basic).

The created XmlReader object expands entity references and performs XML normalization of new line characters.

The following example creates an XmlReader object that reads an XML fragment.

string xmlFrag ="<item rk:ID='abc-23'>hammer</item> " +
                        "<item rk:ID='r2-435'>paint</item>" +
                        "<item rk:ID='abc-39'>saw</item>";

// Create the XmlNamespaceManager.
NameTable nt = new NameTable();
XmlNamespaceManager nsmgr = new XmlNamespaceManager(nt);
nsmgr.AddNamespace("rk", "urn:store-items");

// Create the XmlParserContext.
XmlParserContext context = new XmlParserContext(null, nsmgr, null, XmlSpace.None);

// Create the reader. 
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
XmlReader reader = XmlReader.Create(new StringReader(xmlFrag), settings, context);


Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0
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