asp.net - how can I join two regex into one? -


i have 2 regex need join 1 using regularexpressionattribute in asp.net , not allow multiple instances.

how can join following 2 regex one?

.*?@(?!.*?\.\.)[^@]+$ [\x00-\x7f]

the first 1 checks there not 2 consecutive dots in domain part of email , second regex checks characters ascii

i thought might have been easy joining them (.*?@(?!.*?\.\.)[^@]+$)([\x00-\x7f]) not work

here link previous post relating problem

edit: decorating string property of viewmodel using reglarexpression attribute , gets rendered javascript using unobtrusive therefore has validate using javascript. failed mention in initial post

you can use:

^[\x00-\x7f]+?@(?!.*?\.\.)(?=[\x01-\x7f]+$)[^@]+$

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