listing1207.aspx

来自「asp入门到精通的源代码」· ASPX 代码 · 共 40 行

ASPX
40 行
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<%@Page Language="VB" %>
<%@Import Namespace="System.Xml" %>
<%@Import Namespace="System.Xml.XPath" %>

<script runat="server">
   sub SelectData(obj as object,e as eventargs)
      Dim objDocument as New XPathDocument _
         (Server.MapPath("../day11/books.xml"))

      Dim objNav as XPathNavigator = objDocument.CreateNavigator

      lblMessage.Text = ""
      try
         dim objIterator as XPathNodeIterator = _
            objNav.Select(tbQuery.Text)
		
         While objIterator.MoveNext()
            lblMessage.Text += "&lt;" & _
               objIterator.Current.Name & "&gt; " & _
               objIterator.Current.Value & "<br>"
         end while
      catch ex As Exception
         lblMessage.Text = ex.Message
      end try
   end sub
</script>

<html><body>
   <form runat="server">
      Enter an XPath query. For instance:<p>
      
      <b>//book[last()]/@ISBN/text()</b> or 
      <b>descendant::book/author/last-name</b><p>
   
      <asp:Textbox id="tbQuery" runat=server/>
      <asp:Button id="btnSubmit" text="Submit"
         runat=server OnClick="SelectData"/><p>
      <asp:Label id="lblMessage" runat=server/>
   </form>
</body></html>

listing1207.aspx - 源码说明

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