;      //    cxt.Response.Write("你请求的资源不存在或无权访问！");
            //    cxt.Response.Flush();
            //    cxt.Response.End();
            //}
        }
    
    };
   }

}

由于一旦进行了URL重写，原先的WEBFORM中的Action会发生改变，容易造成：请求的资源不存在问题

具体怎么样？各位DX看看就清楚了！！！

所有才有了这个ResponseFilter了，实现如下，

public class ResponseFilter:System.IO.Stream
{
        public ResponseFilter(System.IO.Stream sink,string _str)
  {
   _sink = sink;
   //
   // TODO: 在此处添加构造函数逻辑
   //
            this.str = _str;
  }
    private string str = "";
  private System.IO.Stream _sink;
  private long _position;
  private System.Text.Encoding end=System.Text.Encoding.GetEncoding("GB18030");
  private System.Text.StringBuilder  oOutput = new System.Text.StringBuilder();
   // The following members of Stream must be overriden.
  public override bool CanRead
  {
   get { return true; }
  }

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

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

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

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

  public override long Seek(long offset, System.IO.SeekOrigin direction)
  {
   return _sink.Seek(offset, direction);
  }

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

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

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

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

  // The Write method actually does the filtering.
    public override void Write(byte[] buffer, int offset, int count)
    {
        string szBuffer = System.Text.UTF8Encoding.UTF8.GetString(buffer, offset, count);
        string ap="action=\"";
       

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