繁体和简体的转换

public class GB2BIG5Filter : Stream
    {
        private Stream _sink;
        private long _position;
        private const string _sGB=@"皑蔼碍1礼丽厉励砾历沥隶俩联莲连镰怜涟帘敛脸链恋炼练粮凉两辆谅疗辽镣猎临邻鳞凛赁龄铃凌灵岭领馏刘龙聋咙笼垄拢陇楼娄搂篓芦卢颅庐炉"
                                  +"掳卤1摊贪瘫滩坛谭谈叹汤烫涛绦讨腾誊锑题体屉条1婴鹰应缨莹萤营荧蝇赢颖哟拥佣痈踊咏涌优忧邮铀犹诱舆鱼渔娱与屿语吁御狱誉预驭鸳渊辕园员圆缘远愿约跃钥岳粤悦阅云郧匀陨运蕴酝晕韵杂灾载攒暂赞赃脏凿枣责择则泽贼赠扎"
                                  +"札轧铡闸栅诈斋债毡盏斩辗崭栈战绽张涨帐账胀赵蛰辙锗这贞针侦1椁榄榇榈榉槟槠樯橥橹橼檐檩殁殇殒殓殚殡轫轭轲轳轵轶轸轹轺轼轾辁辂辄辇辋辍辎辏辘辚戋戗戬瓯昙晔晖暧贲贳贶贻贽"
                                  +"赀赅赆赈赉赇赕赙觇觊觋觌觎觏觐觑毵氇氩氲牍胧胪胫脍脶腌腽膑欤飑飒飓飕飙毂齑斓炀炜炖烨焖焘祢祯禅怼悫愍懑戆沓泶矶砀砗砺砻硖硗碛碜龛睐1觯靓雳霁霭龀龃龅龆龇龈龉龊龌黾鼋鼍隽雠銮錾鱿鲂鲅鲈稣鲋鲎鲐鲒鲔鲕鲚鲛鲞鲟鲠鲡鲢鲣鲥鲦鲧鲨鲩鲫鲭鲮鲰鲱鲲鲳鲵鲶鲷鲻鲽鳄鳅鳆鳇鳌鳍鳎鳏鳐鳓鳔鳕鳗鳜鳝鳟鳢鞑鞯鹘髅髋髌魇魉飨餍鬓黩黪鼹";
        private const string _tGB=@"皚藹礙愛襖奧壩罷擺敗頒辦絆幫綁鎊謗剝飽寶報鮑輩貝鋇狽備憊繃筆畢斃幣閉邊編貶變辯辮標鱉別癟瀕濱賓擯餅並撥缽鉑駁蔔補財參蠶1攬覽懶纜爛1勵礫曆瀝隸倆聯蓮連鐮憐漣簾斂臉鏈戀煉練糧涼兩輛諒療遼鐐獵臨鄰鱗凜賃齡鈴淩靈嶺領餾劉龍聾嚨籠壟攏隴樓婁摟簍蘆盧顱廬爐"
                                  +"擄鹵虜魯賂祿錄陸驢呂鋁侶屢縷慮濾綠巒攣孿灤亂掄輪倫侖淪綸論蘿羅邏鑼籮騾駱絡媽瑪碼螞馬罵嗎買麥賣邁脈瞞饅蠻滿謾貓錨鉚貿麼黴沒鎂門悶們1馭鴛淵轅園員圓緣遠願約躍鑰嶽粵悅閱雲鄖勻隕運蘊醞暈韻雜災載攢暫贊贓髒鑿棗責擇則澤賊贈紮"
                                  +"劄軋鍘閘柵詐齋債氈盞斬輾嶄棧戰綻張漲帳賬脹趙蟄轍鍺這貞針偵診鎮陣掙睜猙爭幀鄭證織職執紙摯擲幟質滯鍾終種腫眾謅軸皺晝驟豬諸誅燭矚囑1檜欒欞櫝槧欏槨欖櫬櫚櫸檳櫧檣櫫櫓櫞簷檁歿殤殞殮殫殯軔軛軻轤軹軼軫轢軺軾輊輇輅輒輦輞輟輜輳轆轔戔戧戩甌曇曄暉曖賁貰貺貽贄"
                                  +"貲賅贐賑賚賕賧賻覘覬覡覿覦覯覲覷毿氌氬氳牘朧臚脛膾腡醃膃臏歟颮颯颶颼飆轂齏斕煬煒燉燁燜燾禰禎禪懟愨湣懣戇遝澩磯碭硨礪礱硤磽磧磣龕睞瞼佘羆羈釓釔釙釗釕釷釧釤鍆釵釹鈦鈑鈐鈁鈧鈄鈥鈀鈺鉦鈷鈳鈽鈸鉞鉬鉭鈿鑠鈰鉉鉈鉍1躉蹌蹠躒蹺蹕躚躋躓躑躡蹣躕躪躦觴觶靚靂霽靄齔齟齙齠齜齦齬齪齷黽黿鼉雋讎鑾鏨魷魴鮁鱸穌鮒鱟鮐鮚鮪鮞鱭鮫鯗鱘鯁鱺鰱鰹鰣鰷鯀鯊鯇鯽鯖鯪鯫鯡鯤鯧鯢鯰鯛鯔鰈鱷鰍鰒鰉鼇鰭鰨鰥鰩鰳鰾鱈鰻鱖鱔鱒鱧韃韉鶻髏髖髕魘魎饗饜鬢黷黲鼴";
        
        public GB2BIG5Filter(Stream sink)
        {
            _sink = sink;
        }
        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);
        }
        public override void Write(byte[] buffer, int offset, int count)
        {
            Encoding e = Encoding.GetEncoding(936);
            string str = e.GetString(buffer, offset, count);
            for (int i = 0; i < str.Length; i++)
            {
                int j = _sGB.IndexOf(str[i]);
                if (j != -1) str = str.Replace(_sGB[j], _tGB[j]);
            }
            e = Encoding.GetEncoding(950);
            _sink.Write(e.GetBytes(str), 0, e.GetByteCount(str));
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (i % 2 == 0)
        {
            Response.ContentEncoding = Encoding.GetEncoding(936); //936 – 简体中文CodePage
            Response.Filter = new GB2BIG5Filter(Response.Filter);
            Response.Charset = "big5";
            Button1.Text = "简体版";
        }
        else
        {
            Response.ContentEncoding = Encoding.GetEncoding(950); //936 – 简体中文CodePage
            Response.Filter = new GB2BIG5Filter(Response.Filter);
            Response.Charset = "gb2312";
            Button1.Text = "繁体版";
        }
        i++;
    }