multi-xsl-transform.aspx

来自「Professional ASP.NET source code」· ASPX 代码 · 共 104 行

ASPX

104 行

<%@Page Language="C#" debug="true"%>
<%@Import Namespace="System.Xml" %>
<%@Import Namespace="System.Xml.XPath" %>
<%@Import Namespace="System.Xml.Xsl" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head>
<title>Different ways to use the XSLTransform object</title>
<!-- #include file="..\global\style.inc" -->
</head>
<body bgcolor="#ffffff">
<span class="heading">Different ways to use the XSLTransform object</span><hr />
<!--------------------------------------------------------------------------->

<div id="outError" runat="server" /><p />

Using XML document file:
<b><span id="outXMLURL" runat="server" /></b><br />
Loaded XSL stylesheet file:
<b><span id="outXSLURL" runat="server" /></b><p />
Output from transformation is:
<div id="outResults" runat="server" /><p />
Transformed to disk file:
<b><span id="outFile" runat="server" /></b>

<script language="C#" runat="server">

	void Page_Load(Object sender, EventArgs e)
	{

		// create virtual path to booklist.xml and authors.xsl files (in same folder as ASPX page)
		string strCurrentPath = Request.Url.ToString();
		string strXMLPath = strCurrentPath.Substring(0, strCurrentPath.LastIndexOf("/")) + "\\booklist.xml";
		string strXSLPath = strCurrentPath.Substring(0, strCurrentPath.LastIndexOf("/")) + "\\authors.xsl";
		string strOutPath = Request.PhysicalPath.Substring(0, Request.PhysicalPath.LastIndexOf("\\")) + "\\authors.xml";

		try
		{
			// create a new XslTransform object to do the transformation
			XslTransform objTransform = new XslTransform();

			// load the XSL stylesheet into the XSLTransform object
			objTransform.Load(strXSLPath);
			outXSLURL.InnerHtml = "<a href='" + strXSLPath + "'>" + strXSLPath + "</a>";

			// create a new XmlTextReader object to fetch XML document
			XmlTextReader objXTReader = new XmlTextReader(strXMLPath);
			outXMLURL.InnerHtml = "<a href='" + strXMLPath + "'>" + strXMLPath + "</a>";

			// create a new XPathDocument object from the XmlTextReader
			XPathDocument objXPDoc = new XPathDocument(objXTReader);

			// create a new XPathNavigator object from the XPathDocument
			XPathNavigator objXPNav;
			objXPNav = objXPDoc.CreateNavigator();

			// create a variable to hold the XmlReader object that is
			// returned from the Transform method
			XmlReader objReader;

			// perform the transformation using the XSL file in the
			// XSLTransform and the XML document referenced by the
			// XPathNavigator. The result is in the XmlReader object
			objReader = objTransform.Transform(objXPNav, null);

			// display the contents of the XmlReader object
			objReader.MoveToContent();
			outResults.InnerText = objReader.ReadOuterXml();

			// create an XMLTextWriter object to write result to disk
			XmlTextWriter objWriter = new XmlTextWriter(strOutPath, null);

			// write the opening <?xml .. ?> declaration and a comment
			objWriter.WriteStartDocument();
			objWriter.WriteComment("List of authors created " + DateTime.Now);

			// transform the XML into the XMLTextWriter
			objTransform.Transform(objXPNav, null, objWriter);

			// ensure that all open elements are closed to end the document
			objWriter.WriteEndDocument();

			// flush the buffer to disk and close the file
			objWriter.Close();
			outFile.InnerHtml = "<a href='" + strOutPath + "'>" + strOutPath + "</a>";
		}
		// ------------ error handling code -------------
		catch (Exception objError)
		{
			// display error details
			outError.InnerHtml = "<b>* Error while accessing document</b>.<br />"
						+ objError.Message + "<br />" + objError.Source;
			return;  //  and stop execution
		}

	}

</script>

<!--------------------------------------------------------------------------->
<!-- #include file="..\global\foot.inc" -->
</body>
</html>

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