asp.net - Regular expression for email to allow only two domain -


i have create regular expression email id this

xyz@yahoo.com , xyz@gmail.com

i need allow yahoo , gmail domain not other domain. have used expression \w+([-+.]\w+)*@yahoo.com . working fine yahoo. want include gmail also. how can modify except gmail also?

i using asp.net 2.0

replace:

yahoo\.com

with:

(yahoo\.com|gmail\.com)

or:

(yahoo|gmail)\.com)

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