json格式序列化注意点

//去除描述里面的所有超链接
            Regex regHref = new Regex("href=\\\"[^\"]*\\\"");
            sHtmlText = regHref.Replace(sHtmlText, "href=\"javascript:void(0)\"");

            //将描述里面的table的固定宽度改为相对宽度
            Regex regTable = new Regex("<table[^>]*width=\\\"[\\d]+\\\">");
            MatchCollection matches2 = regTable.Matches(sHtmlText);
            Regex regTableWidth = new Regex("width=\\\"[\\d]+\\\">");
            foreach (Match item in matches2)
            {
                string itemStr = item.Groups[0].Value;
                Regex reg = new Regex(itemStr);
                itemStr = regTableWidth.Replace(itemStr, "width=\"100%\">");      
                sHtmlText = reg.Replace(sHtmlText, itemStr);
            }

"width=\"100%\">"被我转义成了"width=\\\"100%\\\">"导致了问题，格式要注意