CODEWITHSUNDEEP
c#regex
1moreLearner
1moreLearner

Reputation: 81

C# Regex for custom email and domain

I have a razor view with an input that uses this pattern:

pattern="^[a-zA-Z0-9._+-]+&#64mydomain.com"

It works great using as a front-end validation. However, how could I transform it to a Regex if I want to check on the back-end of things as well?
My emails are constructed as follow:
"[email protected]"
I have tried this:

Regex regex = new Regex("\\^\\[a-zA-Z0-9\\._\\+-]\\+&#64mydomain\\.com", RegexOptions.IgnoreCase);

However, this does not work as I expect since the condition is always false. Is there another way of getting this pattern to work with Regex?

Thanks in advance!

Upvotes: 0

Views: 76

Answers (1)

Wiktor Stribiżew
Wiktor Stribiżew

Reputation: 626826

Direct translation of your regex to C# .NET regex will look like

Regex regex = new Regex(@"^[A-Z0-9._+-]+@mydomain\.com$", RegexOptions.IgnoreCase);

Note there is no problem with @ chars handling in .NET regexps, so @ can be coded as @.

Details:

  • ^ - start of string
  • [A-Z0-9._+-]+ - one or more (+) occurrences of any ASCII letter (A-Z, it is case insensitive due to the regex option used), digits (0-9), ., _, + and -
  • @mydomain\.com - @mydomain.com string
  • $ - end of string.

Upvotes: 1

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