C# SSN Reg Ex with first digit up to '8' : I need to have a Reg-ex for SSN, with a condition: The first digit should have a maximimum value of 8.

The SSN format can be either 123-45-6789  or 123456789 . i.e., it should validate either with an '-' symbol or without it.

Any help would be deeply appreciated.

Regards,
Avinash
   