Need REGEX for the Following

Question

I need the REGEX for the following that should match both conditions 123-456-789 and 123456789

Jean Paul · Answer

Hi Babu You can use the following code - it solves your problem: static void Main(string[] args) { bool result = IsValid(123-456-789); } private static bool IsValid(string input) { bool result1 = new Regex(^([0-9]{3}[-][0-9]{3}[-][0-9]{3})$).IsMatch(input); bool result2 = new Regex(^([0-9]{9})$).IsMatch(input); return result1 || result2; } // Here separate comaprison is done as I am not a regex expert :) Regards Jean Paul Please mark as answer if correct

Dorababu Meka · Answer

From your idea i got this (\d{3}-\d{3}-\d{3})|(\d{9})

Dorababu Meka · Answer

What should i use to combine both

Jean Paul · Answer

Use two regex and combine with or condition