Question

I’m trying to check validation of string that should describe a street’s name.

The template is: number of words start with capital letter, and number with 1 through 4 digits.

Example: Name Of Street 101

I tried this:

Regex stRegex = new Regex(@"^[A-Z][a-z]+ [1-9]+$");

But it seems to not working.

What is the pattern should be to make it work?

Answer 1

You only check for a single word, and you do not allow zeros in the number. Maybe something more like this?

@"^(?:[A-Z][a-z]+ )+[1-9][0-9]{0,3}$"

However your template is a bit restrictive, I think. What about O'Sullivan Street? And you might also want to allow multiple spaces (by adding another + right after the space).