asp.net - regular express match e-mail domain -

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how use regular expression check e-mail addresses, ensuring domain in e-mail specific domain. using asp.net

example. company name abc , employee e-mail addresses on domain abc.com (e.g. john.doe**@abc.com** or donal.smith**@abc.com**)

my application should not allow entry of email address ending domain other @abc.com. entry of email john.oh**@gmail.com *should fail*** john.oh**@abc.com *should pass***.

the domain can mixed case, upper or lower. @abc.com, @abc.com @abc.com etc should allowed.

i think . throwing me off.

thanks taking look

check domain names regex.

"(?i)^.+@abc[.]com$"

or

"^.+@[aa][bb][cc][.][cc][oo][mm]$"

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