vb.net 加拿大邮政编码正则表达式？
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Canadian postal code regex?
提问by software
In the postal code field only the following format should be valid.
在邮政编码字段中，只有以下格式才有效。
B1C 2B3 or B1C3D3
B1C 2B3 或 B1C3D3
how to write a regex for this?
如何为此编写正则表达式？
Edited:
编辑：
^([a-zA-Z]\d[a-zA-z]( )?\d[a-zA-Z]\d)$
This is my regex but it only accepting B1C C1B (notice space in between ) format. even with out space should be valid
这是我的正则表达式，但它只接受 B1C C1B（注意中间的空格）格式。即使没有空间也应该有效
回答by Mike Perrenoud
There are some real inconsistencies here. The Regex you provided ^([a-zA-Z]\d[a-zA-z]( )?\d[a-zA-Z]\d)$matches what was stated by Scott regarding the correct Canadian format. However, the examples you provided do not follow the format B1C C1B or B1CC1B.
这里有一些真正的不一致。您提供的正则表达式^([a-zA-Z]\d[a-zA-z]( )?\d[a-zA-Z]\d)$与 Scott 关于正确加拿大格式的说明相符。但是，您提供的示例不遵循格式B1C C1B or B1CC1B。
To add insult to injury, the Regex you provided works with the proper Canadian format. So there isn't any real reason to change it. I mean, I would change it to this ^([a-zA-Z]\d[a-zA-Z]\s?\d[a-zA-Z]\d)$so that the single space isn't grouped, but that's just me.
雪上加霜的是，您提供的正则表达式适用于正确的加拿大格式。所以没有任何真正的理由去改变它。我的意思是，我会把它改成这样，这样^([a-zA-Z]\d[a-zA-Z]\s?\d[a-zA-Z]\d)$单个空间就不会被分组，但这只是我。
However, as far as using it, it could be used in C# like this:
但是，就使用而言，它可以像这样在 C# 中使用：
var matches = Regex.Match(inputString, @"^([a-zA-Z]\d[a-zA-Z]( )?\d[a-zA-Z]\d)$");
if (!matches.Success) {
// do something because it didn't match
}
and now that it's been tagged with VB.NET:
现在它已被标记为 VB.NET：
Dim matches = Regex.Match(inputString, "^([a-zA-Z]\d[a-zA-Z]( )?\d[a-zA-Z]\d)$")
If Not matches.Success Then
' do something because it didn't match
End If
回答by Neolisk
You'd want to validate the postal code against the address database. Not every postal code in the format A0A0A0is a valid Canadian postal code. Examples of postal codes that do not exist:
您想根据地址数据库验证邮政编码。并非格式A0A0A0中的每个邮政编码都是有效的加拿大邮政编码。不存在的邮政编码示例：
Z0Z0Z0
Z9Z9Z9
Y7Y7Y7
Regarding preliminary checking, the easiest would probably be one with pre-processing of the value by VB.NET code. You need to remove spaces and convert to upper case. Then your regex is very simple: ([A-Z]\d){3}. And here is the full code for testing:
关于初步检查，最简单的方法可能是通过 VB.NET 代码对值进行预处理。您需要删除空格并转换为大写。那么你的正则表达式是非常简单的：([A-Z]\d){3}。这是用于测试的完整代码：
Imports System.Text.RegularExpressions
Module Module1
Sub Main()
Console.WriteLine(CanBeValidCanadianPostalCode("B1C 2B3")) 'prints True
Console.WriteLine(CanBeValidCanadianPostalCode("B1C3D3")) 'prints True
End Sub
Private Function CanBeValidCanadianPostalCode(postal_code As String) As Boolean
Return Regex.IsMatch(postal_code.Replace(" ", "").ToUpper, "([A-Z]\d){3}")
End Function
End Module
回答by Arun Kumar S K
Use the below regex for Canadian ZIP code validations
使用以下正则表达式进行加拿大邮政编码验证
^[ABCEGHJKLMNPRSTVXY]{1}\d{1}[A-Z]{1} *\d{1}[A-Z]{1}\d{1}$
