从文本中提取包含单词的句子

Question

我有一个大文本。我需要在文本中找到任何单词，然后将包含该单词的短语复制到变量中。我怎样才能用 C# 做到这一点？也许我可以使用一些正则表达式？

Answer 1

使用正则表达式[^.!?;]*(search)[^.?!;]*[.?!;]，其中“搜索”是您的查询。

string query = "professional";
var regex = new Regex(string.Format("[^.!?;]*({0})[^.?!;]*[.?!;]", query));
string text =
    @"Stack Overflow is a question and answer site for professional and enthusiast programmers. 
    It's built and run by you as part of the Stack Exchange network of Q&A sites.
    With your help, we're working together to build a library of detailed answers to 
    every question about programming.";

var results = regex.Matches(text);

for (int i = 0; i < results.Count; i++)
    Console.WriteLine(results[i].Value.Trim());

此代码使用正则表达式查找所有包含“professional”的句子，并输出它们，修剪所有空格。

输出：Stack Overflow is a question and answer site for professional and enthusiast programmers.