.net - 字符之间的正则表达式 - 最后匹配

Question

我正在搜索与最后一个 \ 和 _ 之间的值匹配的正则表达式

例子:

输入:\\\ezbe.local\folder1\folder2\folder3\33248a-48596-a54qsd-4d7d98_2

输出:33248a-48596-a54qsd-4d7d98

Answer 1

应该是

[^\\]*(?=_[^\\]*$)

解释:

[^\\]*   # Match any number of non-backslash characters
(?=      # if the following is true after the matched text:
 _       # There is a _
 [^\\]*  # followed only by non-backslash characters
 $       # until the end of the string.
)        # End of lookahead assertion