Regex find comma not inside quotes

Question

I\'m checking line by line in C#

Example data:

bob jones,123,55.6,,,\"Hello , World\",,0
jim neighbor,432,66.5,,,Andy \"Blank,,1
john smith,555,77.4,         


        

Answer 1

Stand back and be amazed!

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Here is the regex you seek:

(?!\B"[^"]*),(?![^"]*"\B)

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Here is a demonstration:

regex101 demo

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• It does not match the second line because the " you inserted does not have a closing quotation mark.
• It will not match values like so: ,r"a string",10 because the letter on the edge of the " will create a word boundary, rather than a non-word boundary.

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Alternative version

(".*?,.*?"|.*?(?:,|$))

This will match the content and the commas and is compatible with values that are full of punctuation marks

regex101 demo