Problem with Regex in .NET (C#)
- by Craig Bovis
I'm trying to write a a regex to validate a string to match the following rules.
Must start with a-z (case insensitive)
Must only contain a-z A-Z 0-9 . -
I've put something together based on my limited knowledge and ran it through an online testing tool for a whole bunch of situations and the results were as I had hoped however when I place the pattern into my .NET code it doesn't match correctly.
The pattern I am using is,
[a-zA-Z][a-zA-Z0-9.\-]*
Is this the correct pattern or am I barking up the wrong tree?
Some examples of what I'm expecting.
craig.bovis - VALID
24craig - INVALID
craig@bovis - INVALID
craig24 - VALID
-craig24 - INVALID
craig24.bovis-test - VALID