繁体解决方案，dotNet开发专用。

参考：http://blog.csdn.net/superdullwolf/archive/2006/12/15/1443596.aspx

。Net做这个就容易多了，重写Filter类就可以了。

用法：

 if(Session["big5"].ToString()=="2"){Response.Filter = new DreamZone.Core.CG2BFilter(Response.Filter);}
  

CG2BFilter.cs文件如下：

using System;
using System.Text;
using System.Text.RegularExpressions;
using System.IO;
using System.Web;
namespace DreamZone.Core
{
 /// <summary>
 /// CG2BFilter 的摘要说明。
 /// </summary>
  
  public class CG2BFilter : Stream
  {
   Stream          responseStream;
   long            position;
   StringBuilder   responseHtml;

   public CG2BFilter (Stream inputStream)
   {
    responseStream = inputStream;
    responseHtml = new StringBuilder ();
   }

   #region Filter overrides
   public override bool CanRead
   {
    get { return true;}
   }

   public override bool CanSeek
   {
    get { return true; }
   }

   public override bool CanWrite
   {
    get { return true; }
   }

   public override void Close()
   {
    responseStream.Close ();
   }

   public override void Flush()
   {
    responseStream.Flush ();
   }

   public override long Length
   {
    get { return 0; }
   }

   public override long Position
   {
    get { return position; }
    set { position = value; }
   }

   public override long Seek(long offset, SeekOrigin origin)
   {
    return responseStream.Seek (offset, origin);
   }

   public override void SetLength(long length)
   {
    responseStream.SetLength (length);
   }

   public override int Read(byte[] buffer, int offset, int count)
   {
    return responseStream.Read (buffer, offset, count);
   }
   #endregion

   #region 转换任务
   public override void Write(byte[] buffer, int offset, int count)
   {
     string strBuffer = System.Text.UTF8Encoding.UTF8.GetString (buffer, offset, count);
     string  finalHtml = Simplified2Traditional(strBuffer);    
     byte[] data = System.Text.UTF8Encoding.UTF8.GetBytes (finalHtml);       
     responseStream.Write (data, 0, data.Length);           
      
   }

   #endregion
#region 自定义函数
   public  string Traditional2Simplified( string str)
   { //繁体转简体
    return(Microsoft.VisualBasic.Strings.StrConv(str, Microsoft.VisualBasic.VbStrConv.SimplifiedChinese,0));
   
   }
   public  string Simplified2Traditional( string str)
   { //简体转繁体
    return(Microsoft.VisualBasic.Strings.StrConv(str as String, Microsoft.VisualBasic.VbStrConv.TraditionalChinese,0));
  
   }
 #endregion
  }
}