Question

I am having to parse a file for mailing addresses… The problem is somelines contain a address and some do not…. The ones that do not contain a mailing address also do not have a zip code… Is there any string pattern match i could use to manage checking for the zip code??? something like

IF not string.isnullorEmpty(_Customer) then
    If _Customer"" ZIP CODE STRING TEST "" THEN
     {do what it should if its is true}
    Else
     {Do something else}
    End If
end if

Answer 1

Depends how complex you want your zip code checking to be, here’s a method we use to validate US and Canadian Postal Codes:

Public Shared Function ValidZip(ByVal cZip As String) As Boolean
    'Check if zip code is either NNNNN-NNNN, NNNNN, ANA NAN 
    Dim rZip As New Regex("^((\d{5}-\d{4})|(\d{5})|([A-Z]\d[A-Z]\s\d[A-Z]\d))$", RegexOptions.IgnorePatternWhitespace)
    If Not rZip.IsMatch(cZip) Then
        Return False
    End If

    Return True
End Function