c# - Regex Match string from starts with -


this regular expression.

^ak[0-9a-za-z-/#\s]{1,15}$

it matches whole string when enter text starts like'aktest123'

but want match below strings like

a ak aktest

how can modify regex match string first character?

this should magic:

^(a|ak[0-9a-za-z-/#\s]{0,15})$

that means accept a, or ak (notice changed 1 @ end 0), or ak , following 15 characters list. want, right?


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