How do I delete specific lines in Notepad++?

Question

I\'m cleaning up some code files (C#) and want to remove the regions. And I would like to delete all the lines that have the string \'#region\'. That\'s just an example, and

Answer 1

Jacob's reply to John T works perfectly to delete the whole line, and you can Find in Files with that. Make sure to check "Regular expression" at bottom.

Solution: ^.*#region.*$