c# - 从c#中的字符串中拆分数字

Question

我在 C# 中有一个这样的字符串:

{ name: "Phai dấu cuộc tình", mp3: "audio\\16\\Phai dau cuoc tinh.mp3"},{ name: "Caravan of life", mp3: "audio\\4\\Caravan of life.mp3"},{ name: "I'm Forbidden", mp3: "audio\\11\\I'm Forbidden.mp3"},{ name: "Cause i love you", mp3: "audio\\6\\Cause i love you.mp3"},{ name: "Chỉ là giấc mơ", mp3: "audio\\8\\Chi la giac mo.mp3"},{ name: "Lột xác ", mp3: "audio\\12\\Lot xac.mp3"

我想将“\\”之间的数字获取到一个新字符串。例如，结果将是:16;4;11;6;8;12。任何帮助都会很棒。

Answer 1

使用积极的环视断言:

string str = "{ name: \"Phai dấu cuộc tình\", mp3: \"audio\\16\\Phai dau cuoc tinh.mp3\"},{ name: \"Caravan of life\", mp3: \"audio\\4\\Caravan of life.mp3\"},{ name: \"I'm Forbidden\", mp3: \"audio\\11\\I'm Forbidden.mp3\"},{ name: \"Cause i love you\", mp3: \"audio\\6\\Cause i love you.mp3\"},{ name: \"Chỉ là giấc mơ\", mp3: \"audio\\8\\Chi la giac mo.mp3\"},{ name: \"Lột xác\", mp3: \"audio\\12\\Lot xac.mp3\"}";

foreach (var match in Regex.Matches(str, @"(?<=\\)\d+(?=\\)"))
    Console.WriteLine(match);

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备选方案:捕获组

foreach (Match match in Regex.Matches(str, @"\\(\d+)\\"))
    Console.WriteLine(match.Groups[1]);

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