c# - Find a credit card within a string -

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i looking way detect credit card within string using c#. regex possibility. not want detect if string credit card.

for example

string text = "hi mum, here credit card 1234-1234-1223-1234. don't tell anyone"; bool result = textcontainscreditcard(text); if (result)   throw new invalidoperationexception("don't give people credit card!");

you can use regex like

(\d{4}[\s-]?){4}

and put chars want separator [\s-] space , minus

and allows separators in position (\d[\s-]?){16} 1 2341234-12341 234


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