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
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.XmlReaderAn XmlReader object that is wrapped around the specified XmlReader object.
| Exception | Condition |
|---|---|
| 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- |
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.
.gif?cs-save-lang=1&cs-lang=vb "Security note") Security Note |
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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.
.gif?cs-save-lang=1&cs-lang=vb "Note") Note |
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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 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.
