XslTransform::Transform Method (XPathNavigator^, XsltArgumentList^, XmlWriter^, XmlResolver^)
Transforms the XML data in the XPathNavigator using the specified args and outputs the result to an XmlWriter.
Assembly: System.Xml (in System.Xml.dll)
public: void Transform( XPathNavigator^ input, XsltArgumentList^ args, XmlWriter^ output, XmlResolver^ resolver )
Parameters
- input
-
Type:
System.Xml.XPath::XPathNavigator^
An XPathNavigator containing the data to be transformed.
- args
-
Type:
System.Xml.Xsl::XsltArgumentList^
An XsltArgumentList containing the namespace-qualified arguments used as input to the transformation.
- output
-
Type:
System.Xml::XmlWriter^
The XmlWriter to which you want to output.
- resolver
-
Type:
System.Xml::XmlResolver^
The XmlResolver used to resolve the XSLT document() function. If this is null, the document() function is not resolved.
The XmlResolver is not cached after the Transform method completes.
| Exception | Condition |
|---|---|
| InvalidOperationException | There was an error processing the XSLT transformation. Note: This is a change in behavior from earlier versions. An XsltException is thrown if you are using Microsoft .NET Framework version 1.1 or earlier. |
Note |
|---|
The XslTransform class is obsolete in the .NET Framework version 2.0. The XslCompiledTransform class is the new XSLT processor. For more information, see Using the XslCompiledTransform Class and Migrating From the XslTransform Class. |
XslTransform supports the XSLT 1.0 syntax. The XSLT style sheet must include the namespace declaration xmlns:xsl= http://www.w3.org/1999/XSL/Transform.
The args are matched with the xsl:param elements defined in the style sheet. The transformation selections apply to the document as a whole. In other words, if the current node is set on a node tree other than the document root node, this does not prevent the transformation process from accessing all nodes in the loaded document. After the transformation is performed, the XPathNavigator remains in its original state. This means that the node, that is current before the transformation process, remains the current node after the Transform method has been called.
The xsl:output element is not supported when outputting to an XmlWriter (xsl:output is ignored). See Outputs from an XslTransform for more information.
The following example loads and edits an XML document before performing an XSLT transform.
XmlDocument^ doc = gcnew XmlDocument; doc->Load( "books.xml" ); // Modify the XML file. XmlElement^ root = doc->DocumentElement; root->FirstChild->LastChild->InnerText = "12.95"; // Create an XPathNavigator to use for the transform. XPathNavigator^ nav = root->CreateNavigator(); // Transform the file. XslTransform^ xslt = gcnew XslTransform; xslt->Load( "output.xsl" ); XmlTextWriter^ writer = gcnew XmlTextWriter( "books.html", nullptr ); xslt->Transform( nav, nullptr, writer, nullptr);
Available since 1.1
