Remove empty lines in text using Visual Studio

问题:

How to remove empty lines in Visual Studio?

回答1:

Since Visual Studio 2012 changed its regex syntax, the original answers by Ala translate into the following in VS 2012:

Remove single blank lines

Old:

^:b*$\n

New:

^(?([^\r\n])\s)*\r?$\r?\n

Visual Studio 2013 (thanks to BozoJoe and Joe Johnston):

^\s*$\n

Remove double blank lines

Old:

^:b*\n:b*\n

New:

^(?([^\r\n])\s)*\r?\n(?([^\r\n])\s)*\r?\n

Rolls right off your tongue.

Here is the conversion sheet from MSDN.

回答2:

It's very useful especially if you want to arrange or compare codes, thanks for the people who answer this question, I've got the answer from here and would like to share it with Stackoverflow:

Visual Studio has ability to delete empty lines in replace operation using regular expressions.

• Click Ctrl-H (quick replace)

• Tick "Use Regular Expressions"

• In Find specify ^$\n

• In Replace box delete everything.

• Click "Replace All"

All empty lines will be deleted.

Regular expression for empty line consist of

Beginning of line ^

End of line $

Line break \n

Note that normally in Windows an end of line indicated by 2 characters crlf - Carriage Return (CR, ASCII 13, \r) Line Feed (LF, ASCII 10, \n).

A regex to remove blank lines that are/aren't really blank (i.e. they do/don't have spaces): ^:b*$\n

To remove double lines: ^:b*\n:b*\n replace with: \n

* for Visual Studio 2013 and above:*

^\s*$\n

and for double lines:

^(?([^\r\n])\s)*\r?\n(?([^\r\n])\s)*\r?\n

See the regular expression syntax updates for VS2012 and above in @lennart's answer below

回答3:

In Visual Studio 2013 (Version 12.0.20623.01) i removed empty lines with this regular expression ^\r\n In the screen you can see the matched lines indicated by the brown squares.

回答4:

Tested in VS 2012 to allow for pure line feeds.

^\s*$\n 

hth

回答5:

To remove two or more adjacent empty rows with VS2012 use this:

^(?([^\r\n])\s)*\r?$\r?\n^(?([^\r\n])\s)*\r?$\r?\n

回答6:

Using Visual Studio 2017

in Current Document

use shortcut

• Open Tools > Options or press Alt + T + O
• Under Environment tab > Keyboard
• Search for "DeleteBlank" and select Edit.DeleteBlankLines
• Add a new shortcut for example Ctrl+D,Ctrl+E
• Assign > OK

select all text and hit the shortcut

回答7:

To remove double lines: ^:b*\n:b*\n replace with: \n

Source: http://geekswithblogs.net/mnf/archive/2008/03/04/remove-empty-lines-in--text-using-visual-studio.aspx

回答8:

I'm using visual studio 2017, non of the above worked for me until I tried \n\r

Steps:

1. Ctrl + H (opens find and replace)
2. Select use regular expression (Alt + E)
3. Enter \n\r into the "Find..." input
4. Press replace

回答9:

In VS 2012, the regex string to use to find and replace all blank lines is ^(?([^\r\n])\s)\r?\n

回答10:

Install CodeMaid and hit Ctrl+M, Space' to clean up the code. (It formats the code, like Format DocumentCtrl+E, D`, as well). You can clean up more files from Solution Explorer.

回答11:

Ctrl + K, Ctrl+D auto formats the current document and that removes unnecessary space in your code. It helps keep your code readable if that what you were looking for.