正则截取字符串

Question

string contentdetail = "<p><img height='60' src='http://drmcmm.baidu.com/media/id=nHfLnWcsrf&amp;gp=402&amp;time=nHcvPHTsP1Tsr0.gif' width='420' border='0' alt='' /></p>";
            Regex regex = new Regex(@"怎么写");
            string src = regex.Match(contentdetail).ToString();
            Console.Write(src);麻烦高手给指点下怎么从contentdetail 截取得到'http://drmcmm.baidu.com/media/id=nHfLnWcsrf&amp;gp=402&amp;time=nHcvPHTsP1Tsr0.gif

Answer 1

try...            string contentdetail = " <p> <img height='60' src='http://drmcmm.baidu.com/media/id=nHfLnWcsrf&amp;gp=402&amp;time=nHcvPHTsP1Tsr0.gif' width='420' border='0' alt='' /> </p>";
            Regex reg = new Regex(@"(?i)<img[^>]*?\ssrc=(['""]?)(?<src>[^'""\s>]+)\1[^>]*>");
            Match m = reg.Match(contentdetail);
            if (m.Success)
            {
                Console.Write(m.Groups["src"].Value);
            }