ASP.NET----从XML文档转换到DataSet

  
    

   
     using
   
      System;

   
     using
   
      System.Xml;

   
     using
   
      System.Data;

   
     using
   
      System.Text;

   
     using
   
      System.IO;

   
     namespace
   
      NET.MST.Tenth.XmlAndDataSet
{
 
   
     partial
   
      
   
     class
   
      XmlAndDataSet
 {
 
   
     static
   
      
   
     void
   
      Main(
   
     string
   
     [] args)
 {
 Console.WriteLine(
   
     "
   
     从XML文档转换到DataSet：
   
     "
   
     );
 DataSet ds 
   
     =
   
      ConvertXMLFileToDataSet(
   
     "
   
     ..\\..\\Test.xml
   
     "
   
     );
 PrintDataSet(ds);
 Console.WriteLine(
   
     "
   
     从DataSet转换回XML文档：
   
     "
   
     );
 ConvertDataSetToXML(ds).Save(Console.Out);
 Console.Read();
 }
 
   
     ///
   
      
   
     <summary>
   
     
 
   
     ///
   
      打印DataSet
 
   
     ///
   
      
   
     </summary>
   
     
 
   
     ///
   
      
   
     <param name="ds">
   
     DataSet对象
   
     </param>
   
     

   
      
   
     static
   
      
   
     void
   
      PrintDataSet(DataSet ds)
 {
 
   
     foreach
   
      (DataTable table 
   
     in
   
      ds.Tables)
 {
 Console.WriteLine(
   
     "
   
     表{0}:
   
     "
   
     , table.TableName);
 
   
     foreach
   
      (DataColumn column 
   
     in
   
      table.Columns)
 {
 Console.Write(
   
     "
   
     {0}({1}) 
   
     "
   
     , column.ColumnName, column.ColumnMapping.ToString());
 }
 Console.Write(
   
     "
   
     \r\n
   
     "
   
     );
 
   
     foreach
   
      (DataRow row 
   
     in
   
      table.Rows)
 {
 
   
     foreach
   
      (DataColumn col 
   
     in
   
      table.Columns)
 {
 Console.Write(
   
     "
   
     {0} 
   
     "
   
     , row[col.ColumnName].ToString().Trim());
 }
 Console.Write(
   
     "
   
     \r\n
   
     "
   
     );
 }
 }
 }
 }
 
   
     partial
   
      
   
     class
   
      XmlAndDataSet
 {
 
   
     ///
   
      
   
     <summary>
   
     
 
   
     ///
   
      将xml文件转换为DataSet
 
   
     ///
   
      
   
     </summary>
   
     

   
      
   
     public
   
      
   
     static
   
      DataSet ConvertXMLFileToDataSet(
   
     string
   
      xmlFile)
 {
 
   
     //
   
     读入XML文档
   
     

   
      XmlDocument xml 
   
     =
   
      
   
     new
   
      XmlDocument();
 xml.Load(xmlFile);
 DataSet result 
   
     =
   
      
   
     new
   
      DataSet();
 
   
     using
   
      (StringReader stream 
   
     =
   
      
   
     new
   
      StringReader(xml.InnerXml))
 {
 
   
     using
   
      (XmlTextReader reader 
   
     =
   
      
   
     new
   
      XmlTextReader(stream))
 {
 result.ReadXml(reader);
 
   
     return
   
      result;
 }
 }
 }
 
   
     ///
   
      
   
     <summary>
   
     
 
   
     ///
   
      将DataSet转换为xml对象字符串
 
   
     ///
   
      
   
     </summary>
   
     

   
      
   
     public
   
      
   
     static
   
      XmlDocument ConvertDataSetToXML(DataSet ds)
 {
 
   
     using
   
      (MemoryStream stream 
   
     =
   
      
   
     new
   
      MemoryStream())
 {
 
   
     //
   
     通过XmlTextWriter来生成XML
   
     

   
      
   
     using
   
      (XmlTextWriter writer 
   
     =
   
      
   
     new
   
      XmlTextWriter(stream, Encoding.Unicode))
 {
 
   
     //
   
     DataSet转换为XML文档
   
     

   
      ds.WriteXml(writer);
 
   
     //
   
     从流中读出数据
   
     

   
      
   
     int
   
      count 
   
     =
   
      (
   
     int
   
     )stream.Length;
 
   
     byte
   
     [] arr 
   
     =
   
      
   
     new
   
      
   
     byte
   
     [count];
 stream.Seek(
   
     0
   
     , SeekOrigin.Begin);
 stream.Read(arr, 
   
     0
   
     , count);
 XmlDocument result 
   
     =
   
      
   
     new
   
      XmlDocument();
 result.LoadXml(
   
     "
   
     <?xml version='1.0' encoding='GB2312'?>
   
     "
   
     +
   
     
 Encoding.Unicode.GetString(arr).Trim());
 
   
     return
   
      result;
 }
 }
 }
 }
}