必须有一种更简单的方法来做到这一点。
我正在尝试为一个名为“导入电话号码”的电话号码类编写一个函数。它应该在某个地方使用任何包含 10 位数字的字符串(并允许扩展),并将它们导入到它自己的属性中:AreaCode、Prefix、Suffix 和 Extension (aaa-ppp-ssss-xxxx ...)。
我用正则表达式检查输入以确保它有效,现在我想将这些部分标记为它们各自的属性。我所拥有的看起来像这样(不完整):
Public Sub ImportPhoneNumber(ByVal anyNumber As String)
'phone number is 10-digits long, e.g.: 012-345-6789
Dim reg_exp_10 As New Regex("^((\D*)\d(\D*)){9}((\D*)\d){1}(((x|ext){1}(\d)+)?|\D*)$", RegexOptions.IgnoreCase)
If reg_exp_10.IsMatch(anyNumber) Then
Dim areacode As String = HRITS.Constants.DEFAULT_STRING_VALUE
Dim prefix As String = HRITS.Constants.DEFAULT_STRING_VALUE
Dim suffix As String = HRITS.Constants.DEFAULT_STRING_VALUE
Dim loadExtension As Boolean = False
Dim count As Integer = 0
'for each char in anynumber, is it a number? concatenate it onto holder number
For Each i As Char In anyNumber
'first 3 hits, load areacode
If count < 3 Then
If Char.IsDigit(i) Then
areacode = String.Concat(areacode, i)
count = count + 1
End If
End If
'second 3 hits, load prefix
If count >= 3 AndAlso count < 6 Then
If Char.IsDigit(i) Then
prefix = String.Concat(prefix, i)
count = count + 1
End If
End If
'third 4 hits, load suffix
If count >= 6 AndAlso count < 10 Then
If Char.IsDigit(i) Then
suffix = String.Concat(suffix, i)
count = count + 1
End If
End If
If count >= 10 Then
If i.ToString = "x" Then
loadExtension = True
ElseIf i.ToString = "e" Then
End If
End If
Next
Else
Throw New Exception(ErrorMessages.PhoneNumber.INVALID_NUMBER)
End If
End Sub
有任何想法吗?