代碼如下:
<BR>        /* <STRONG>時間很久遠了，有碼友要，我抄了下來，記得使用的時候還是有部分例外情況要處理，大部分是ok的。</STRONG>
        * 函數(shù)： 
        * 說明：無損返回HTML代碼
        *      
        * 作者：卡斯Kas(QQ：10590916)
        * 修改：2010-12-13、
        */

        public static string LeftH(string str, int l)
        {
            //為了防止錯誤
            string odstr = str;
            bool isHtml = false;//判斷截取開頭是否是字符串
            int maxLen = str.Length;
            int n = 0, i = 0, b = 0, e = 0;
            string c, c2 = "", Start = "", EndLabel = "", AllLabel = "";
            if (l >= str.Length) return str;//截取字段大于字符長度

            bool isErr = false;
            try
            {
            while (n < l && i < maxLen)
            {
                //1
                i++;
                c = str.Substring(i - 1, 1);

                string end2str = "";
                try
                {
                    end2str = str.Substring(i - 1, 2);
                }
                catch
                {