Bug in IranianNationalCode #91
Description
The method IsValidIranianNationalCode() currently has a validation flaw and incorrectly accepts clearly invalid Iranian national codes.
For example, the following value is considered valid by the method, while it should be rejected:
2222222222
This value is invalid according to Iranian national code rules, since codes with all identical digits (e.g. 0000000000, 1111111111, 2222222222, etc.) are not valid national codes.
"2222222222".IsValidIranianNationalCode();
The method returns true for invalid inputs such as:
2222222222
1111111111
0000000000