我有大行的文本文件。每个“参考”都有您的数据和任何文本。 我如何只获得所有行“参考CI-PERSONA”？
Date: 28/10/2017
Reference: CI-Auto
1. any text any text
2. any text any text
Date: 29/10/2017
Reference: CI-Persona
1. any text any text
Date: 29/10/2017
Reference: CI-Persona
1. any text any text
2. any text any text
Date: 29/10/2017
Reference: CI-Civil
1. any text any text
2. any text any text
3. any text any text
Date: 29/10/2017
Reference: CI-Persona
1. any text any text
预期结果是：
Date: 29/10/2017 Reference: CI-Persona 1. any text any text Date: 29/10/2017 Reference: CI-Persona 1. any text any text 2. any text any text Date: 29/10/2017 Reference: CI-Persona 1. any text any text
有人可以帮帮我吗？我正在使用C＃。
答案 0 :(得分：0)
不太好，但确实有效：
string pattern = @"Date:\s\d{1,2}\/\d{1,2}\/\d{4}(\n|\r|\r\n)Reference:.CI-Persona(?:(?!\s^Date).)+";
MatchCollection matches = Regex.Matches(input, pattern, RegexOptions.Multiline | RegexOptions.Singleline);