ASP.NET中的XML表单控件(二)-控件新闻-慧都网

ASP.NET中的XML表单控件(二)

翻译|其它|编辑：郝浩|2006-05-31 16:03:00.000|阅读 1354 次

概述：

程序代码紧接上所示:
// ********************************** XmlReader *****************************
    public void ShowDocument ()
    {
        outputXml = new StringBuilder();
        XmlTextReader reader = new XmlTextReader (FileLabel.Text);

        while (reader.Read())
        {
            switch (reader.NodeType)
            {
            case XmlNodeType.ProcessingInstruction:
                Format (reader, "ProcessingInstruction");
                break;
            case XmlNodeType.DocumentType:
                Format (reader, "DocumentType");
                break;
            case XmlNodeType.Comment:
                Format (reader, "Comment");
                break;
            case XmlNodeType.Element:
                Format (reader, "Element");
                break;
            case XmlNodeType.Text:
                Format (reader, "Text");
                break;
            case XmlNodeType.Whitespace:
                break;
            }
        }
        TextBox3.Text = outputXml.ToString();
    }

    protected void Format(XmlReader reader, String NodeType)
    {
        // Format the output
        for (int i=0; i < reader.Depth; i++)
        {
            outputXml.Append('\t');
        }

        outputXml.Append(reader.Prefix + NodeType + "<" + reader.Name + ">" + reader.Value);

        // Display the attributes values for the current node
        if (reader.HasAttributes)
        {
            outputXml.Append(" Attributes:");

            for (int j=0; j < reader.AttributeCount; j++)
            {
                outputXml.Append(reader[j]);
            }
        }
        outputXml.Append("\r\n");
    }

    /// ************************* DOM *********************************
    protected void ShowDocument(XmlNode node)
    {
        if (node != null)
            Format (node);

        if (node.HasChildNodes)
        {
            node = node.FirstChild;
            while (node != null)
            {
                ShowDocument(node);
                node = node.NextSibling;
            }
        }
    }

    // Format the output
    private void Format (XmlNode node)
    {
        if (!node.HasChildNodes)
        {
           outputXml.Append("\t" + "<" + node.Value + ">");
        }

        else
        {
            outputXml.Append("<" + node.Name + ">");
            if (XmlNodeType.Element == node.NodeType)
            {
                XmlNamedNodeMap map = node.Attributes;
                foreach (XmlNode attrnode in map)
                    outputXml.Append(" " + attrnode.Name + "<" + attrnode.Value + "> ");
            }
            outputXml.Append("\r\n");
        }
    }
}

下面就是webform2.aspx了
webform2.aspx
                                ---
<%@ Import Namespace="System" %>
<%@ Import Namespace="System.IO" %>
<%@ Assembly Name="System.Xml" %>
<%@ Import Namespace="System.Xml" %>
<%@ Page Language="C#" Inherits="WebForm2" Src="WebForm2.cs" Debug="true" %>

<HTML><HEAD>

  <script runat="server" language="C#">
    // Put page script here
        public void On_KeyUp(object sender, System.EventArgs e)
    {
        Response.Write("Works");
    }

  </script>


<TITLE>test</TITLE>
</HEAD>

<BODY   >


<form method="post" action="WebForm2.aspx" runat="server" enctype="multipart/form-data">

<div align="left">
<table>
  <tr>
    <td>XML Document:</td>
    <td><input type=file id="XmlFile" runat=server>         FileName:</td>
    <td><asp:label id="FileLabel" runat="server"></asp:label></td>
  </tr>

  <tr>
    <td>XPath Expression</td>
    <td><asp:textbox id=TextBox1 runat="server" Height="20" Width="300" text=".//text()" OnKey_Up="On_KeyUp"></asp:textbox></td>
    <td><asp:button type=submit OnClick="Query_Click" runat="server" Height="20" Width="91" text="Query"></asp:button></td>
  </tr>
</table>

</br>
<table>
  <tr><td>Output from Query</td><td>XML Data</td><tr>
  <tr><td>Query Display: <asp:dropdownlist runat="server">
                         <asp:listitem>Descriptive</asp:listitem>
                         <asp:listitem>XML</asp:listitem>
                         </asp:dropdownlist>
  </td><tr>
  <tr>
    <td width="50%" valign="top" align="left"><asp:textbox id=TextBox2 runat="server" Height="400" Width="350" TextMode="MultiLine" Rows="10"></asp:textbox></td>
    <td width="50%" valign="top" align="left"><asp:xml id="MyXml" transformsource="test.xsl" runat=server/></asp:xml></td>
  </tr>
</table>
</div>

    <td><asp:textbox id=TextBox3 runat="server" Height="1" Width="5" TextMode="MultiLine" Rows="110"></asp:textbox></td>

</form>

</BODY>
</HTML>
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