public static string[] GetHtmlImageUrlList(string sHtmlText) { // 定义正则表达式用来匹配 img 标签 Regex regImg = new Regex(@"<input\b[^<>]*?\bsrc=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<inputValue>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase); // 搜索匹配的字符串 MatchCollection matches = regImg.Matches(sHtmlText); int i = 0; string[] sUrlList = new string[matches.Count]; // 取得匹配项列表 foreach (Match match in matches) sUrlList[i++] = match.Groups["inputValue"].Value; return sUrlList; }
(?<inputValue>[^\s\t\r\n""'<>]*)和match.Groups["inputValue"].Value;来怎么理解,能否在举个就简单例子
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