XML学习笔记(三)：写入XML文档的XmlTextWriter

页面代码：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="WriteXML.aspx.cs" Inherits="WriteXML" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

    <div>

        ConnecionString:

        <asp:TextBox ID="TextBox1" runat="server" Height="70px" Width="531px"></asp:TextBox><br />

        Table Name:

        <asp:TextBox ID="TextBox2" runat="server" Height="48px" Width="525px"></asp:TextBox><br />

        Destination File Name:

        <asp:TextBox ID="TextBox3" runat="server" Height="56px" Width="519px"></asp:TextBox><br />

    </div>

    <asp:RadioButton ID="RadioButton1" Text="Columns as elements" runat="server" GroupName="ExportType" />

    <br />

    <asp:RadioButton ID="RadioButton2" Text="Columns as attributes" runat="server" GroupName="ExportType" />

    <br />

    <asp:Button ID="Button1" runat="server" Height="31px" Text="Export Data" Width="134px"

        OnClick="Button1_Click" />

    </form>

</body>

</html>

执行代码：

   1:  using System;

   2:  using System.Data.SqlClient;

   3:  using System.Xml;

4:

   5:  public partial class WriteXML : System.Web.UI.Page

   6:  {

   7:      protected void Page_Load(object sender, EventArgs e)

   8:      {

9:

  10:      }

  11:      protected void Button1_Click(object sender, EventArgs e)

  12:      {

  13:          SqlConnection cnn = null;

  14:          SqlCommand cmd = null;

  15:          SqlDataReader reader = null;

  16:          XmlTextWriter writer = null;

  17:          try

  18:          {

  19:              cnn = new SqlConnection(TextBox1.Text);

  20:              cmd = new SqlCommand();

  21:              cmd.Connection = cnn;

  22:              cmd.CommandText = "select * from " + TextBox2.Text;

  23:              cnn.Open();

  24:              reader = cmd.ExecuteReader();

  25:              writer = new XmlTextWriter(TextBox3.Text, null);

  26:              writer.WriteStartDocument();

  27:              writer.WriteComment("File exported on " + DateTime.Now);

  28:              writer.WriteStartElement("table");

  29:              while (reader.Read())

  30:              {

  31:                  if (RadioButton1.Checked)

  32:                  {

  33:                      writer.WriteStartElement("row");

  34:                      for (int i = 0; i < reader.FieldCount; i++)

  35:                      {

  36:                          writer.WriteStartElement(reader.GetName(i));

  37:                          writer.WriteString(reader.GetValue(i).ToString());

  38:                          writer.WriteEndElement();

  39:                      }

  40:                      writer.WriteEndElement();

  41:                  }

  42:                  else

  43:                  {

  44:                      writer.WriteStartElement("row");

  45:                      for (int i = 0; i < reader.FieldCount; i++)

  46:                      {

  47:                          writer.WriteAttributeString(reader.GetName(i),

  48:                          reader.GetValue(i).ToString());

  49:                      }

  50:                      writer.WriteEndElement();

  51:                  }

  52:              }

  53:              writer.WriteEndElement();

  54:          }

  55:          catch (Exception ex)

  56:          {

  57:              Response.Write(ex.Message);

  58:          }

  59:          finally

  60:          {

  61:              writer.Close();

  62:              reader.Close();

  63:              cnn.Close();

  64:          }

  65:      }

  66:  }

执行效果和结果：

columns as elements:

colunms as attributes:

posted on 2009-05-09 15:58 虎克阅读(237) 评论(0) 收藏举报

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