字符串截取

Question

   
  string aaa(string str)
        {
            int index = str.IndexOf('>');
            str = str.Substring(index+1);
            int index1 = str.LastIndexOf('<');
            return str.Substring(0, index1);        }

Answer 1

网页数据蜘蛛？
a.Split('>')[1].Split('<')[0];

Answer 2

   string content = "<td class=td_right>9.9000</td><td class=td_right>22</td>";
            Regex htmlRegex = new Regex(@"<td[^>]*>(?<Content>[^<]*)</td>");
            MatchCollection mc = htmlRegex.Matches(content);
            foreach (Match m in mc)
            {
                Console.WriteLine(m.Groups["Content"].Value);
            }

Answer 3

使用正则表达式：                    Regex re = new Regex("<.*?>(.*?)<.*?>", RegexOptions.Multiline);
                    if (re.IsMatch(input))
                    {
                        foreach (Match item in re.Matches(input))
                        {
                            if (item.Groups.Count > 1)
                            {
                                for (int i = 1; i < item.Groups.Count; i++)
                                {
                                    sb.Append(string.Format(" 分组{0}：{1}", i, item.Groups[i].Value));
                                }
                            }
                        }
                    }

Answer 4

>(\s+)?\d+(\.\d+)?(\s+)?<
匹配结果再去匹配\d+(\.\d+)?