How do I delete specific lines in Notepad++?

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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 I can think of several more uses, but is that even possible?

8 Answers

Notepad++ v6.5

  1. Search menu -> Find... -> Mark tab -> Find what: your search text, check Bookmark Line, then Mark All. This will bookmark all the lines with the search term, you'll see the blue circles in the margin.

  2. Then Search menu -> Bookmark -> Remove Bookmarked Lines. This will delete all the bookmarked lines.

You can also use a regex to search. This method won't result in a blank line like John's and will actually delete the line.

Older Versions

  1. Search menu -> Find... -> Find what: your search text, check Bookmark Line and click Find All.
  2. Then Search -> Bookmark -> Remove Bookmarked Lines

You can use menu Search -> Replace... (Ctrl + H).

It has a regular expression feature for replacing. You can use a regex that matches #region as well as whatever else is on the line, and replace it with empty space.

You can try doing a replace of #region with \n, turning extended search mode on.

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