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credit card mod 10 validation

Discussion in 'Information Technology' started by Zen Masta, Jul 28, 2006.

  1. Zen Masta

    Zen Masta
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    Guest

    https://www.azcode.com/Mod10/

    I found this clever JavaScript and was wondering if anyone knows of a
    similar one in vb for use in ms access... preferably one that can handle
    hyphens separating the number groups.
     
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  3. Douglas J. Steele

    Douglas J. Steele
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    Guest

    You can use the Replace function to get rid of hyphens or spaces:

    strCardNumber = Replace(Replace(strCardNumber, "-", ""), " ", "")

    You can use the Mid function to look at each digit in the string in turn

    For intLoop = 1 To Len(strCardNumber)
    strCurrChar = Mid(strCardNumber, intLoop, 1)

    Next intLoop

    You can use the Mod function to determine whether a particular value of
    intLoop is odd or even:

    If intLoop Mod 2 = 0 Then
    ' intLoop is even
    Else
    'intLoop is odd
    End If


    --
    Doug Steele, Microsoft Access MVP
    http://I.Am/DougSteele
    (no private e-mails, please)


    "Zen Masta" <nospam@nospam.com> wrote in message
    news:eqKtOjSeGHA.1204@TK2MSFTNGP02.phx.gbl...
    > https://www.azcode.com/Mod10/
    >
    > I found this clever JavaScript and was wondering if anyone knows of a
    > similar one in vb for use in ms access... preferably one that can handle
    > hyphens separating the number groups.
    >
     

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