asp.net 特殊字符处理

/// <summary>
        /// 替换html中的特殊字符
        /// </summary>
        /// <param name="theString">需要进行替换的文本。</param>
        /// <returns>替换完的文本。</returns>
        public static string HtmlEncode(string theString)
        {
            theString = theString.Replace(">", "＞");
            theString = theString.Replace("<", "＜");
            theString = theString.Replace(" ", "　");
            theString = theString.Replace("'", "＇");
            theString = theString.Replace(",", "，");
            theString = theString.Replace("/'", "'");
            theString = theString.Replace("/n", "<br/> ");
            return theString;
        }