Home/ Questions/Q 9266853
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-18T14:24:47+00:00

I have a ASP.NET regular expression validator and how do I express: If the

  • 0

I have a ASP.NET regular expression validator and how do I express:

“If the value to be tested is empty or contains [a-zA-Z0-9\s]+ elements?”

in regex?

I have to test a TextBox in ASP.NET, and while submitting the request, I would want the regular expression validator attached to TextBox to allow submitting the form if it contains characters, numbers or is empty.

matched example 1. "This is a good 1"

matched example 2. ""(empty)

unmatched example 1. "what is this ****?" (because it contains ‘*’ and ‘?’)

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Since no one has actually posted it as an answer yet…

    Just change the + to a * in your regex. The former means match 1 or more, whereas the latter matches 0 or more. This is what you want since you want to allow blanks.

    • 0