To remove empty comments form Visual Studio 2012 use this regular expression:


and replace all the matches with nothing. Just make sure you are only searching in *.cs files. Because this can mess up other files, like JavaScript

Apparently whitespace is matched by (?([^\r\n])\s) in VS search and replace tool. While \s is a white space including new line and carriage return character

Reference to Visual Studio 2012 regular expression search is here:

Sometimes you would like to check passwords to be conformant with some rules. At least one digit, one letter is a common one. Here is the regexp for this:


Allows special characters and makes sure at least one number and one letter.



Demands at least one letter, one digit and one special-character. The first one does not demand special chars, only allows them.