hi there,
i have been asking this question every time.

public bool ValidateTelNo(string TelNo)
        {
            bool value = false;

            
                string rePhoneNumber = @"[1-9]\d{2}\s?\d{3}\d{4}$";
                string PhoneNoFormat = @"\([1-9]\d{2}\)\s?\d{3}\-\d{4}$";

                Regex re = new Regex(rePhoneNumber);
                Regex re1 = new Regex(PhoneNoFormat);

                if (re.IsMatch(TelNo) || (re1.IsMatch(TelNo)))
                    value = true;

                else
                    value = false;

           

            return value;
        }

in the above code can someone explain rePhoneNumber and PhoneNoFormat ?
what are the valeus that it takes in and what charaters (int string or special)

appriciate
thankx

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