C# 正则获取href里面的值

 string reg = @"<a[^>]*href=([""‘])?(?<href>[^‘""]+)\1[^>]*>";
                        MatchCollection matches = Regex.Matches(content, reg, RegexOptions.IgnoreCase);
                        foreach (Match item in matches)
                        {
                          var  href= item.Groups[1].Value;
                        }