html:
<img class="bubble large" src="/images/hero-logos/cog.svg" width="90%" />
C#:
var aRegexText = "<img.*src=\\\".*?\\\".*/>"; Regex aRegex = new Regex(aRegexText, RegexOptions.IgnoreCase); MatchCollection aMatchCollection = aRegex.Matches(aHtml);
原文：http://www.cnblogs.com/ningkyolei/p/4623648.html