Regex 提取使用正则表达式找到searchkeyword的字符串部分

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A Borrower (or the Parent) may not deliver a Utilisation Request if as a result of the proposed Utilisation:<br/>
[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]<br/>
[15] or more Revolving Company Utilisations would be outstanding[; or<br/>
[20] or more Incremental Company Loans would be outstanding].<br/>
A Borrower (or the Parent) may not request that a Company A Loan [or an Incremental Company Loan] be divided if, as a result of the proposed division, [  25      ] or more Company A Loans [or [  50    ] or more Incremental Company Loans] would be outstanding.<br/>
[A Borrower (or the Parent) may not request that a Company B Loan or a Company C Loan be divided.]

我所尝试的似乎不起作用

Regex = '.*other than Incremental Company Loans.*'

---

这将返回整个段落。可能还有其他方法可以做到这一点，但我们只能使用正则表达式来做到这一点。

纯粹的正则表达式方法可能不够，因为您可能希望进一步用换行符替换

，而且模式相当复杂：

(?<=^|<br/>)(?:(?!<br/>).)*other than Incremental Company Loans[\s\S]*?(?=[.;]<br/>|$)

输出：

[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]
[15] or more Revolving Company Utilisations would be outstanding[; or
[20] or more Incremental Company Loans would be outstanding].

---

magictakwhile

方法是借用自。它接受项目直到满足条件，包括最后一个不再满足条件的项目。

您的“行”是否用

分隔？那是HTML吗？最简单的方法是将所有

替换为

\n

，并使用我已与您共享的非正则表达式解决方案。正确。。。这就是我们从数据库中获取字符串的方式……那么，为什么要使用正则表达式呢

inputText.Split（new[]{“
”，StringSplitOptions.None）。其中（x=>x.Contains（“除了增量贷款”）

@WiktorStribiżew-谢谢，但是使用REGEX可以吗？是的，但为什么？你能解释一下你在哪里用它吗？与纯代码相比，正则表达式的性能/可读性较差。如何将MagicTakeWhile添加到asp.net网页。。。bcos这是一个类方法，您应该将它放入一个公共静态类中。@user3657339很高兴它能为您工作。如果我的回答对你有帮助，请考虑一下投票。

var s = "A Borrower (or the Parent) may not deliver a Utilisation Request if as a result of the proposed Utilisation:<br/>[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]<br/>[15] or more Revolving Company Utilisations would be outstanding[; or<br/>[20] or more Incremental Company Loans would be outstanding].<br/>A Borrower (or the Parent) may not request that a Company A Loan [or an Incremental Company Loan] be divided if, as a result of the proposed division, [  25      ] or more Company A Loans [or [  50    ] or more Incremental Company Loans] would be outstanding.<br/>[A Borrower (or the Parent) may not request that a Company B Loan or a Company C Loan be divided.]";
var result = s.Split(new[] {"<br/>"}, StringSplitOptions.None)
    .SkipWhile(x => !x.Contains("other than Incremental Company Loans"))
    .MagicTakeWhile(x => !x.EndsWith(".") && !x.EndsWith(";"));
Console.WriteLine(string.Join("\n", result));

[10] or more Term Loans [(other than Incremental Company Loans)] would be outstanding; [or]
[15] or more Revolving Company Utilisations would be outstanding[; or
[20] or more Incremental Company Loans would be outstanding].