Learning XPath with XSLT using ASP.NET 2.0 - Setting up your environment: ASP.NET 2.0 code and XSL

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In the previous section, we completed setting up the XML schema and XML document. Now it is time to modify our ASP.NET 2.0 code to work with a simple XSL focusing on the XML document provided in the previous section.

Add a new button to your ASP.NET 2.0 project and add the following code to the button click event:

Protected Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click

    Dim XSLTFileName As String = Server.MapPath("EmpDetails01.xsl")

    Dim XMLFileName As String = Server.MapPath("EmployeeDetails.xml")

    Dim docXML As New XmlDocument

    docXML.Load(XMLFileName)

    Me.txtXML.Text = docXML.InnerXml

    Dim xp As New XPath.XPathDocument(New XmlTextReader(New IO.StringReader(docXML.InnerXml)))

    Xml1.XPathNavigator = xp.CreateNavigator

    Xml1.TransformSource = XSLTFileName

    '----------------------------------------> generating XSLT to show to user

    Dim xslt As New Xsl.XslCompiledTransform()

    xslt.Load(XSLTFileName)

    ' Create the writer.

    Dim settings As New XmlWriterSettings()

    settings.Indent = True

    settings.IndentChars = ControlChars.Tab

    settings.ConformanceLevel = ConformanceLevel.Auto

    Dim sw As New IO.StringWriter

    Dim writer As XmlWriter = XmlWriter.Create(sw, settings)

    ' Execute the transformation.

    xslt.Transform(docXML, writer)

    writer.Close()

    Me.Literal1.Text = "<pre>" & Server.HtmlEncode(sw.ToString) & "</pre>"

    sw.Close()

  End Sub

The above code not only transforms your XML to XSL, but also displays the transformation to the user. The following is a sample XSL to test with the above ASP.NET 2.0 code:

<?xml version="1.0" encoding="utf-8"?>

<xsl:stylesheet version="1.0"

    xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

      <xsl:template match="/">

            <b>

                  <xsl:value-of select="EmployeeDetails/Department/Employee/Ename"/>

            </b>

      </xsl:template>

</xsl:stylesheet>

Once the above code is executed, your transformation should look something like the following:

<b>Jagadish</b>

If you are able to view the transformation as above, your setup is correct.

Next: Retrieving all values of a particular element at a particular level of hierarchy (or path) >>
 

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