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XmlReader.Create Method (XmlReader, XmlReaderSettings)

Creates a new XmlReader instance with the specified XmlReader and XmlReaderSettings objects.

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

'Declaration
Public Shared Function Create ( _
	reader As XmlReader, _
	settings As XmlReaderSettings _
) As XmlReader
'Usage
Dim reader As XmlReader 
Dim settings As XmlReaderSettings 
Dim returnValue As XmlReader 

returnValue = XmlReader.Create(reader, _
	settings)

Parameters

reader
Type: System.Xml.XmlReader

The XmlReader object that you wish to use as the underlying reader.

settings
Type: System.Xml.XmlReaderSettings

The XmlReaderSettings object used to configure the new XmlReader instance.

The conformance level of the XmlReaderSettings object must either match the conformance level of the underlying reader, or it must be set to Auto.

Return Value

Type: System.Xml.XmlReader
An XmlReader object that is wrapped around the specified XmlReader object.

ExceptionCondition
ArgumentNullException

The reader value is Nothing.

InvalidOperationException

If the XmlReaderSettings object specifies a conformance level that is not consistent with conformance level of the underlying reader.

-or-

The underlying XmlReader is in an Error or Closed state.

This method allows you add additional features to an underlying XmlReader object. The underlying XmlReader object can be another XmlReader object created by the Create method, or an XmlReader object created using one of the concrete XmlReader implementations.

A default XmlUrlResolver with no credentials is used to access any external resources such as a schema. If the external resource is located on a network resource that requires authentication, specify an XmlResolver with the necessary credentials using the XmlReaderSettings.XmlResolver property.

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 Nothing.

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

The following example creates a validating XmlReader object that is wrapped around an XmlNodeReader object.

NoteNote:

To see the complete sample go to Validation Using a Wrapped XmlReader Object.

' Create the XmlNodeReader object. 
Dim doc As New XmlDocument()
doc.Load("books.xml")
Dim nodeReader As New XmlNodeReader(doc)

' Set the validation settings. 
Dim settings As New XmlReaderSettings()
settings.ValidationType = ValidationType.Schema
settings.Schemas.Add("urn:bookstore-schema", "books.xsd")
AddHandler settings.ValidationEventHandler, AddressOf ValidationCallBack

' Create a validating reader that wraps the XmlNodeReader object. 
Dim reader As XmlReader = XmlReader.Create(nodeReader, settings)
' Parse the XML file. 
While reader.Read()
End While

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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