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!

CodePudding user response：

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.