正则表达式问题

[mbh0210]

<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>

</MultiRecords]>
</MultiRecords]>
<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>

</MultiRecords]>
</MultiRecords]>
解析后的结果是1：<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>

</MultiRecords]>
</MultiRecords]>
2：<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>

</MultiRecords]>
</MultiRecords]>
我写的是<\[MultiRecords>((.|\n)*)<\/MultiRecords\]>，把所有的一次全部取出来了。不正确！

[Roc_Lee]

想要的结果是什么？

[wuyi8808]

@"(?s)<\[MultiRecords>(.*?)<\/MultiRecords\]>"

[mbh0210]

源字符串：
<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq <[MultiRecords>

qwewq </MultiRecords]>

</MultiRecords]>
</MultiRecords]>
<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq <[MultiRecords>

qwewq </MultiRecords]>

</MultiRecords]>
</MultiRecords]>


想要的结果是：1. <[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq <[MultiRecords>

qwewq </MultiRecords]>

</MultiRecords]>
</MultiRecords]>
2： <[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq <[MultiRecords>

qwewq </MultiRecords]>

</MultiRecords]>
</MultiRecords]>

[wuyi8808]

如果要取最内层的：

@"(?si)<\[MultiRecords>((?!<\[MultiRecords>).*?)<\/MultiRecords\]>"

[LutzMark]

非贪婪循环一次，可以一次取一个的

string tmp;
 foreach (Match match in Regex.Matches(NewsString, "(?i:src<\[MultiRecords>((.|\n)*) <\/MultiRecords\]>",RegexOptions.IgnoreCase))
{
                     tmp = match.Value;
//...
}

[wuyi8808]

要最外层的，就要用到平衡组了。

[CeShenBeiWang]

mark

[mbh0210]

2楼的结果是：<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>
和
<[MultiRecords> qwewq
<[MultiRecords>

qwewqqwewq<[MultiRecords>

qwewq</MultiRecords]>
少了</MultiRecords]>
</MultiRecords]> ，你用非贪婪的，所有没有这两个。

[keystudio]

"<[MultiRecords[^>]*>[^<>]*(((?'Open'<[MultiRecords[^>]*>)[^<>]*)+((?'-Open'</MultiRecords]>)[^<>]*)+)*(?(Open)(?!))</MultiRecords]>"

[wuyi8808]

using System; 
using System.Text.RegularExpressions;

class A
{ 
  static void Main()
  {
    string input = @"<[MultiRecords> qwewq 
                <[MultiRecords> 

                qwewqqwewq <[MultiRecords> 

                qwewq </MultiRecords]> 

                </MultiRecords]> 
                </MultiRecords]> 
<[MultiRecords> qwewq 
                <[MultiRecords> 

                qwewqqwewq <[MultiRecords> 

                qwewq </MultiRecords]> 

                </MultiRecords]> 
                </MultiRecords]>";
    string pattern = @"(?six)
<\[MultiRecords>   # 头
  (?>
    [^<>]+
    |
    <\[MultiRecords>(?<Depth>)
    |
    </MultiRecords\]>(?<-Depth>)
  )*
  (?(Depth)(?!))
</MultiRecords\]>  # 尾  
";
    int i = 0;
    foreach (Match m in Regex.Matches(input, pattern))
    {
      Console.WriteLine("------ 第{0}个匹配 -------\n{1}\n", ++i, m);
    }
  }
} 
/* 程序输出：
------ 第1个匹配 -------
<[MultiRecords> qwewq 
                <[MultiRecords> 

                qwewqqwewq <[MultiRecords> 

                qwewq </MultiRecords]> 

                </MultiRecords]> 
                </MultiRecords]>

------ 第2个匹配 -------
<[MultiRecords> qwewq 
                <[MultiRecords> 

                qwewqqwewq <[MultiRecords> 

                qwewq </MultiRecords]> 

                </MultiRecords]> 
                </MultiRecords]>
*/

[yooyoozoo]

观看 学习中

[mbh0210]

谢谢各位啊。。。。

[mbh0210]

谢谢各位啊。。。。