How to include '-' in the string with regex check [duplicate]

Question

I have the below regex, which currently allows '_' but not '-'.

string validCharacters = @"^\w+$";

Regex.Match(componentName, validCharacters);

But I want to also to include '-' as a valid character. The '-' can be at any place in the string. i,e: first,last,middle,after '_' etc.

Below are the few test cases:

"DTD_rtop-234"

"DTD-rtop_234"

"-DTD_rtop-234"

"DTD_rtop-234-"

"DTD_-rtop-234"

Any help will be much appreciated.

Samantha · Accepted Answer · 2018-03-22 06:11:43Z

2

Combine the - character with the \w characters in a single character class: [-\w].

Your desired regex is therefore: ^[-\w]+$.

answered Mar 22, 2018 at 6:11

Samantha

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3 Comments

Perfect ! Clean, clear and brief

Use this solution and check on regex101.com

Thanks @Samantha . It's solved my purpose.