加拿大邮政编码验证

Question

我需要M4B 1C7使用C#(.NET)正则表达式验证加拿大邮政编码(例如).

Answer 1

加拿大邮政编码不能包含字母D,F,I,O,Q或U,也不能以W或Z开头:

[ABCEGHJKLMNPRSTVXY][0-9][ABCEGHJKLMNPRSTVWXYZ][0-9][ABCEGHJKLMNPRSTVWXYZ][0-9]

如果你想在中间有一个可选空间:

[ABCEGHJKLMNPRSTVXY][0-9][ABCEGHJKLMNPRSTVWXYZ] ?[0-9][ABCEGHJKLMNPRSTVWXYZ][0-9]

Answer 2

以下是规则http://en.wikipedia.org/wiki/Postal_code#Reserved_characters

ABCEGHJKLMNPRSTVXY <-- letter used 
DFIOQU <-- letters not used because it mixes up the reader
WZ     <-- letters used but not in the first letter
With that in mind the following in the proper regex

@[ABCEGHJKLMNPRSTVXY][0-9][ABCEGHJKLMNPRSTVWXYZ][\s][0-9][ABCEGHJKLMNPRSTVWXYZ][0-9]