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用C#把文件转换为XML

2007-10-10 15:37 295 查看
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.IO;
using System.Xml;
     /// xml解决了在多层架构中数据传输的问题,比如说在客户端可以用Web服务获取服务器端的office文件,修改后再回传给服务器
  /// 只要把文件转换成xml格式,便有好多方案可以使用了,而xml具有平台无关性,你可以在服务端用.net用发布web服务,然后客户端用
  /// Java写一段applit小程序来处理发送过来的文件,当然我举的例子几乎没有任何显示意义,它却给了我们不少的启示.
  /// 另外如果你的解决方案是基于多平台的,那么他们之间的交互最好不要用远程应用程序接口调用(RPC),应该尽量用基于文档的交互,
  /// 比如说.net下的MSMQ,j2ee的JMQ.
  ///
  /// 示例中设计到好多的类,我并没有在所有的地方做过多注释,有不明白的地方请参阅MSDN,这是偶第一个windows程序,有不对的地方
  /// 欢迎各位指导
  /// </summary>
  public class Form1 : System.Windows.Forms.Form
  {

namespace MyWindows
{
  /// <summary>
  /// 这个示例演示如何把Office文件编码为xml文件以及如何把生成的xml文件转换成Office文件
  /// 把文件转换成xml格式,然后就可以用web服务,.NET Remoting,WinSock等传送了(其中后两者可以不转换也可以传送)

  /// <summary>
   /// 声明四个Button,一个OpenFileDialog,一个SaveFileDialog,以及两个XmlDocument
   /// </summary>
   private System.Windows.Forms.Button button1;
   private System.Windows.Forms.Button button2;
   private System.Windows.Forms.OpenFileDialog openFileDialog1;
   private System.Windows.Forms.SaveFileDialog saveFileDialog1;
   private System.Windows.Forms.Button button3;
   private System.Windows.Forms.Button button4;
   private System.Xml.XmlDocument mXmlDoc;
   private System.Xml.XmlDocument doc;
   private System.ComponentModel.Container components = null;

  public Form1()
   {
    //
    // Windows 窗体设计器支持所必需的
    //
    InitializeComponent();

   //
    // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
    //
   }

  /// <summary>
   /// 清理所有正在使用的资源。
   /// </summary>
   protected override void Dispose( bool disposing )
   {
    if( disposing )
    {
     if(components != null)
     {
      components.Dispose();
     }
    }
    base.Dispose( disposing );
   }

  #region Windows 窗体设计器生成的代码
   /// <summary>
   /// 设计器支持所需的方法 - 不要使用代码编辑器修改
   /// 此方法的内容。
   /// </summary>
   private void InitializeComponent()
   {
    this.button1 = new System.Windows.Forms.Button();
    this.button2 = new System.Windows.Forms.Button();
    this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
    this.saveFileDialog1 = new System.Windows.Forms.SaveFileDialog();
    this.button3 = new System.Windows.Forms.Button();
    this.button4 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    //
    // button1
    //
    this.button1.Location = new System.Drawing.Point(96, 32);
    this.button1.Name = "button1";
    this.button1.TabIndex = 0;
    this.button1.Text = "生成xml";
    this.button1.Click += new System.EventHandler(this.button1_Click);
    //
    // button2
    //
    this.button2.Location = new System.Drawing.Point(96, 80);
    this.button2.Name = "button2";
    this.button2.TabIndex = 1;
    this.button2.Text = "生成doc";
    this.button2.Click += new System.EventHandler(this.button2_Click);
    //
    // button3
    //
    this.button3.Location = new System.Drawing.Point(8, 32);
    this.button3.Name = "button3";
    this.button3.TabIndex = 2;
    this.button3.Text = "加载doc";
    this.button3.Click += new System.EventHandler(this.button3_Click);
    //
    // button4
    //
    this.button4.Location = new System.Drawing.Point(8, 80);
    this.button4.Name = "button4";
    this.button4.TabIndex = 3;
    this.button4.Text = "加载xml";
    this.button4.Click += new System.EventHandler(this.button4_Click);
    //
    // Form1
    //
    this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
    this.ClientSize = new System.Drawing.Size(184, 141);
    this.Controls.Add(this.button4);
    this.Controls.Add(this.button3);
    this.Controls.Add(this.button2);
    this.Controls.Add(this.button1);
    this.Name = "Form1";
    this.Text = "Form1";
    this.ResumeLayout(false);
    //
    //手工注册一下Load和Closed事件
    //
    this.Load += new System.EventHandler(this.Form1_Load);
    this.Closed += new System.EventHandler(this.Form1_Closed);

  }
   #endregion

  /// <summary>
   /// 从这个入口启动窗体
   /// </summary>
   static void Main()
   {
    Application.Run(new Form1());
   }
   /// <summary>
   /// 把加载的Office文件转换为xml文件
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   private void button1_Click(object sender, System.EventArgs e)
   {
    saveFileDialog1.Filter = "xml 文件|*.xml";//设置打开对话框的文件过滤条件
    saveFileDialog1.Title = "保存成 xml 文件";//设置打开对话框的标题
    saveFileDialog1.FileName="";
    saveFileDialog1.ShowDialog();//打开对话框

   if(saveFileDialog1.FileName != "")//检测用户是否输入了保存文件名
    {
     mXmlDoc.Save(saveFileDialog1.FileName);//用私有对象mXmlDoc保存文件,mXmlDoc在前面声明过
     MessageBox.Show("保存成功");
    }
   }

  /// <summary>
   /// 把加载的xml文件转换为Office文件
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   private void button2_Click(object sender, System.EventArgs e)
   {
    //从私有对象dox里选取me节点,这里的一些对xml对象的操作详细说明可以参考msdn以获取更多信息
    XmlNode node=doc.DocumentElement .SelectSingleNode("me") ;
    XmlElement ele=(XmlElement)node;//获取一个xml元素
    string pic=ele.GetAttribute ("aa");//获取ele元素的aa属性并报讯在一个临时字符串变量pic

   byte[] bytes=Convert.FromBase64String (pic);//声明一个byte[]用来存放Base64解码转换过来的数据流

    //从保存对话框里获取文件保存地址
    saveFileDialog1.Filter = "Office Documents(*.doc, *.xls, *.ppt)|*.doc;*.xls;*.ppt";
    saveFileDialog1.Title = "保存成 office 文件";
    saveFileDialog1.FileName="";
    saveFileDialog1.ShowDialog();

   if(saveFileDialog1.FileName != "")
    {
     //创建文件流并保存
     FileStream outfile=new System.IO .FileStream (saveFileDialog1.FileName,System.IO.FileMode.CreateNew);
     outfile.Write(bytes,0,(int)bytes.Length );
     MessageBox.Show("保存成功");
    }

  }

  /// <summary>
   /// 加载窗口时的一些初始化行为
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   public void Form1_Load(object sender, System.EventArgs e)
   {
    MessageBox.Show("欢迎使用蛙蛙牌文档转换器");
   }
   /// <summary>
   /// 卸载窗体时把临时变量全部释放
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   public void Form1_Closed(object sender, System.EventArgs e)
   {
    mXmlDoc=null;
    doc=null;
   }
   /// <summary>
   /// 加载office文件并编码序列花为一个XmlDocument变量
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   private void button3_Click(object sender, System.EventArgs e)
   {
    string strFileName;
    openFileDialog1.Filter = "Office Documents(*.doc, *.xls, *.ppt)|*.doc;*.xls;*.ppt" ;
    openFileDialog1.FilterIndex = 1;
    openFileDialog1.FileName = "";
    openFileDialog1.ShowDialog();
    strFileName = openFileDialog1.FileName;
    if(strFileName.Length != 0)
    {
     System.IO.FileStream inFile=new FileStream(strFileName,System.IO.FileMode.Open,System.IO.FileAccess.Read);
     byte[] binaryData=new byte [inFile.Length];
     inFile.Read(binaryData, 0,(int)inFile.Length);
     string mStr=Convert.ToBase64String(binaryData);
     string hh=mStr;
     mXmlDoc=new System.Xml.XmlDocument();

     mStr=string.Format ("<wawa><me aa="{0}"/></wawa>",mStr);
     mXmlDoc.LoadXml( mStr);
     MessageBox.Show("加载成功");
    }

  }
   /// <summary>
   /// 加载xml文件到私有对象dox
   /// </summary>
   /// <param name="sender"></param>
   /// <param name="e"></param>
   private void button4_Click(object sender, System.EventArgs e)
   {
    string strFileName;
    openFileDialog1.Filter = "xml 文件|*.xml" ;
    openFileDialog1.FilterIndex = 1;
    openFileDialog1.FileName = "";
    openFileDialog1.ShowDialog();
    strFileName = openFileDialog1.FileName;
    //If the user does not cancel, open the document.
    if(strFileName.Length != 0)
    {
     doc=new XmlDocument();
     doc.Load(strFileName);
     MessageBox.Show("加载成功");
    }

  }

 }
}

 
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