不会正则表达式,这个比较常用,留用
注意group[0].value中带着两头筛选条件,group[1].value中没有
string str12="<a href=\"标注1\" target=_blank>标注2</a>";
string pattern12 = "<a\\shref=\"([^\"]*)\"\\starget=_blank>(.*?)</a>";
var m = Regex.Match(str12, pattern12,RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
string bs1 = m.Groups[1].Value;
string bs2 = m.Groups[2].Value;
string str3 = "<a class=bl href=\"profile.php?action=show&uid=85521\">标注3</a>";
string pattern3 = "<a\\sclass=bl[^<]*>(.*?)</a>";
m = Regex.Match(str3, pattern3,RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
string bs3 = m.Groups[1].Value;
string str4 = "<div class=f10>标注4</div>";
string pattern4 = "<div\\sclass=f10[^<]*>(.*?)</div>";
m = Regex.Match(str4, pattern4,RegexOptions.Multiline | RegexOptions.Singleline | RegexOptions.IgnoreCase);
string bs4 = m.Groups[1].Value;