Extract substring in between symbols reading from the end of a string

[ciaramkm (Murph)]

Hi. What would be the best approach to extract a substring in between two symbols reading from the end of a string rather than from the start as there could be a number of same symbols used in the example. I have provided some examples and the output I am looking for is to be able to extract in between what is before the last underscore symbol _ and after the second last underscore symbol _

Example: test_string_outside_example

Output: outside

Example: many_days_time

Output: days

Example: machine_bots_work_down_inside

Output: down

[Yoichi]

Hi,

There are some ways to achieve it. One of them is to use regex as the following, for example.

System.Text.RegularExpressions.Regex.Match(yourString,"[^_]+(?=_[^_]*$)").Value

Regards,

[ciaramkm (Murph)]

Thank you - the Regex solution worked like a charm as gives the correct output to the above request