.net - Regex for a string of n characters -


i want use .net's regex.ismatch function determine if string 8 characters long , matches expression ak-\d\d\d\d[ff]. so, ak-9442f match not ak-9442f2 nor ak-9442. how construct expression?

using static regex.ismatch, can do:

if (regex.ismatch(myteststring, @"^ak-\d{4}[ff]$")) {   // passed }

should work purpose. broken down, it's:

^       # must match beginning of string   ak-     # string literal, "ak-"   \d{4}   # \d digit, {4} means must repeated 4 times   [ff]    # either upper or lowercase f $       # must match end of string

gskinner test


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