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用 C# 把文件转换为 XML

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using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.IO; using System.XML; 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>
 public class Form1 : System.Windows.Forms.Form  {   /// <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 );   }   Windows 窗体设计器生成的代码   /// <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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