我想获得附加命名组。

来源文本：

1/2/3/4/5|id1:value1|id2:value2|id3:value3|1/4/2/7/7|id11:value11|id12:value12|

Group1:
1/2/3/4/5|id1:value1|id2:value2|id3:value3|
Sub groups:
id1:value1|
id2:value2|
id3:value3|

Group2:
1/4/2/7/7|id11:value11|id12:value12|
Sub groups:
id11:value11|
id12:value12|

我怎样才能做到这一点？

How I can do this?

推荐答案

虽然这个任务是很容易的无并发症通过拆分，净正则表达式匹配召开各组的所有捕获的记录（不同于任何其他的味道，我知道的），使用组。捕获集合。

While this task is easy enough without the complication by splitting, .Net regex matches hold a record of all captures of every group (unlike any other flavor that I know of), using the Group.Captures collection.

匹配：

string pattern = @"(?<Header>\d(?:/\d)*\|)(?<Pair>\w+:\w+\|)+";
MatchCollection matches = Regex.Matches(str, pattern);

使用：

foreach (Match match in matches)
{
    Console.WriteLine(match.Value); // whole match ("Group1/2" in the question)
    Console.WriteLine(match.Groups["Header"].Value);
    foreach (Capture pair in match.Groups["Pair"].Captures)
    {
        Console.WriteLine(pair.Value); // "Sub groups" in the question
    }
}

工作的例子： http://ideone.com/5kbIQ