regex - VB.Net Regex: Make operator apply to whole word, but not return it

Question

I'm looking to make a regex with an operator that applies to a whole word. For example, I want the word hello to be optional. Instead of having h?e?l?l?o?, I am wondering if it is possible to write something like (hello)?*.

*Note that (hello)? does not work for my case since I do not want hello to be returned in the matches.

Answer 1

我怀疑你想要一个非捕获组，这是?:在组开始时使用的：

(?:hello)?

有关更多详细信息，请参阅MSDN 分组构造指南。