Regular expression, How to allow combination of dot (period) and letters?

Question

I want to allow (.) and (a-zA-Z) letters and _ and - , I have some problems with the (.) ,

Any idea ?

Thanks in advance ,

Ish

Answer 1

This should work just fine:

  [A-z._\-]+

Please be aware that you my have to escape that slash depending on your programming language.