C#对HTML转译需要注意的问题

浏览数：29 / 时间：2015年06月09日

在做B/S程序时我们多少会用到一点HTML特殊符号转译。如：“&”——>“&” , "<"——>"<" , ">"——>">" , " "——>" " ...

符号转译成为编码：

        /// <summary>
        /// HTMLs the en code.
        /// </summary>
        /// <param name="sHTML">The HTML.</param>
        /// <returns></returns>
        public static string HTMLEnCode(string sHTML)
        {
            string sTemp = "";
            if (sHTML.Length == 0)
            {
                return "";
            }
            sTemp = sHTML.Replace("<", "&lt;");
            sTemp = sTemp.Replace("&", "&amp;");
            sTemp = sTemp.Replace(">", "&gt;");
            sTemp = sTemp.Replace("‘", "&#39;");
            sTemp = sTemp.Replace(" ", "&nbsp;");
            sTemp = sTemp.Replace("\"", "&quot;");
            sTemp = sTemp.Replace("\n", "<br />");
            return sTemp;
        }

当我们需要再转换成HTML代码的时候会用到：

 /// <summary>
        /// HTMLs the de code.
        /// </summary>
        /// <param name="sHTML">The HTML.</param>
        /// <returns></returns>
        public static string HTMLDeCode(string sHTML)
        {
            string sTemp = "";
            if (sHTML.Length == 0)
            {
                return "";
            }
            sTemp = sHTML.Replace("&lt;", "<");
            sTemp = sTemp.Replace("&gt;", ">");
            sTemp = sTemp.Replace("&#39;", "‘");
            sTemp = sTemp.Replace("&nbsp;", " ");
            sTemp = sTemp.Replace("&quot;", "\"");
            sTemp = sTemp.Replace("&amp;", "&");
            sTemp = sTemp.Replace("<br />", "\n");
            return sTemp;
        }