正则表达式匹配模式达到“。”

Question

我正在尝试使用正则表达式将字符串匹配到句点。例如，我有这个字符串

Updated IVR Info response to :Answered but No Response. Locked for IVR processing. 
Updated IVR Info response to :Yes. Locked for IVR processing.
Updated IVR Info response to :No. Locked for IVR processing. 

我希望我的匹配集合包含3个字符串。

Answered but No Response
No
Yes

我尝试了什么..

string pattern = "Updated IVR Info response to :.+?/.";

Regex r = new Regex(pattern);

var matches = r.Matches(item.Information);

Answer 1

您可以在正则表达式中使用lookbehind：

string pattern = "(?<=Updated IVR Info response to :)[^.]+";

RegEx Demo

Answer 2

我认为你正在逃避''。'错误的方式：

"Updated IVR Info response to :.+?\\.";

要获取实际值，请使用组：

string pattern = "Updated IVR Info response to :(.+?\\.)";

Regex r = new Regex(pattern);

var values = r.Matches(item.Information).Cast<Match>().Select(m => m.Groups[1].Value);

输出：

  

回答但没有回应   是的。
  否。