The following code example demonstrates how to use an XmlDataSource control and a TreeView control to display transformed XML data on a Web form. The transformation is performed using the style sheet indicated by the TransformFile property. You can optionally supply transformation arguments for the style sheet using an XsltArgumentList. For more information, see the TransformArgumentList property.
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<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:xmldatasource
id="XmlDataSource1"
runat="server"
datafile="bookstore.xml"
transformfile="bookstore.xsl"/>
<!- TreeView uses hierachical data, so the
XmlDataSource uses an XmlHierarchicalDataSourceView
when a TreeView is bound to it. -->
<asp:treeview
id="TreeView1"
runat="server"
datasourceid="XmlDataSource1">
<databindings>
<asp:treenodebinding depth="1" datamember="genre"
textfield="name" valuefield="name"/>
<asp:treenodebinding depth="2" datamember="book"
textfield="title" valuefield="ISBN"/>
<asp:treenodebinding depth="3" datamember="chapter"
textfield="name" valuefield="num"/>
</databindings>
</asp:treeview>
</form>
</body>
</html>
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<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:XmlDataSource
id="XmlDataSource1"
runat="server"
datafile="bookstore.xml"
transformfile="bookstore.xsl"/>
<!- TreeView uses hierachical data, so the
XmlDataSource uses an XmlHierarchicalDataSourceView
when a TreeView is bound to it. -->
<asp:treeview
id="TreeView1"
runat="server"
datasourceid="XmlDataSource1">
<databindings>
<asp:treenodebinding depth="1" datamember="genre"
textfield="name" valuefield="name"/>
<asp:treenodebinding depth="2" datamember="book"
textfield="title" valuefield="ISBN"/>
<asp:treenodebinding depth="3" datamember="chapter"
textfield="name" valuefield="num"/>
</databindings>
</asp:treeview>
</form>
</body>
</html>
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<%@ Page Language="VJ#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:XmlDataSource
id="XmlDataSource1"
runat="server"
datafile="bookstore.xml"
transformfile="bookstore.xsl"/>
<!- TreeView uses hierachical data, so the
XmlDataSource uses an XmlHierarchicalDataSourceView
when a TreeView is bound to it. -->
<asp:treeview
id="TreeView1"
runat="server"
datasourceid="XmlDataSource1">
<databindings>
<asp:treenodebinding depth="1" datamember="genre"
textfield="name" valuefield="name"/>
<asp:treenodebinding depth="2" datamember="book"
textfield="title" valuefield="ISBN"/>
<asp:treenodebinding depth="3" datamember="chapter"
textfield="name" valuefield="num"/>
</databindings>
</asp:treeview>
</form>
</body>
</html>
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The XML file in the code example has the following data:
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<bookstore>
<genre name="fiction">
<book ISBN="0000000000">
<title>Secrets of Silicon Valley</title>
<price>12.95</price>
<chapters>
<chapter num="1" name="Introduction" />
<chapter num="2" name="Body" />
<chapter num="3" name="Conclusion" />
</chapters>
</book>
</genre>
<genre name="novel">
<book genre="novel" ISBN="1111111111">
<title>Straight Talk About Computers</title>
<price>24.95</price>
<chapters>
<chapter num="1" name="Introduction" />
<chapter num="2" name="Body" />
<chapter num="3" name="Conclusion" />
</chapters>
</book>
</genre>
</bookstore>
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The XSL style sheet that performs the XML transformation has the following structure:
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<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="bookstore">
<bookstore>
<xsl:apply-templates select="genre"/>
</bookstore>
</xsl:template>
<xsl:template match="genre">
<genre>
<xsl:attribute name="name">
<xsl:value-of select="@name"/>
</xsl:attribute>
<xsl:apply-templates select="book"/>
</genre>
</xsl:template>
<xsl:template match="book">
<book>
<xsl:attribute name="ISBN">
<xsl:value-of select="@ISBN"/>
</xsl:attribute>
<xsl:attribute name="title">
<xsl:value-of select="title"/>
</xsl:attribute>
<xsl:attribute name="price">
<xsl:value-of select="price"/>
</xsl:attribute>
<xsl:apply-templates select="chapters/chapter" />
</book>
</xsl:template>
<xsl:template match="chapter">
<chapter>
<xsl:attribute name="num">
<xsl:value-of select="@num"/>
</xsl:attribute>
<xsl:attribute name="name">
<xsl:value-of select="@name"/>
</xsl:attribute>
<xsl:apply-templates/>
</chapter>
</xsl:template>
</xsl:stylesheet>
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