正则表达式获取字符串中的img标签中的url链接

//JavaScript中的代码：var re = /src=\"([^\"]*?)\"/i;var arr = str.match(re);if (arr != undefined && arr.length > 0) {    insertHtml = arr[1];}

/// <summary>        /// 获取字符串中img的url集合        /// </summary>        /// <param name="content">字符串</param>        /// <returns></returns>        public static List<string> getImgUrl(string content)        {            Regex rg = new Regex("src=\"([^\"]+)\"", RegexOptions.IgnoreCase);            var m = rg.Match(content);            List<string> imgUrl = new List<string>();            while (m.Success)            {                imgUrl.Add(m.Groups[1].Value); //这里就是图片路径                                m = m.NextMatch();            }            return imgUrl;        }