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Hermanifer

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Calling up the Networkdays Excel functions to use in Access Query

I have seen that it is possible to call up Excel Functions in Access.  I want to pull the Networkdays function is Access so I can use it in a query.  I have tried several modules but still can't use the funcition in a query.  Can someone guide me (step-by-step) on what to do?
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jadedata
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ala_frosty

Try this out
Public Function NetworkDays(start_date As Date, end_date As Date, Optional holidays As Variant)
    'Currently does nothing with the holidays
    NetworkDays = DateDiff("d", start_date, end_date) + 1
    NetworkDays = NetworkDays - Int(NetworkDays / 7) * 2
    If DatePart("w", start_date) = vbSunday And DatePart("w", end_date) <> vbSaturday Then
        'Start on Sunday but not ending on Saturday
        NetworkDays = NetworkDays - 1
    ElseIf DatePart("w", start_date) = vbSaturday And DatePart("w", end_date) <> vbFriday Then
        'Start on Saturday and not ending on Friday
        NetworkDays = NetworkDays - IIf(DatePart("w", end_date) = vbSaturday, 1, 2)
    ElseIf DatePart("w", start_date) > vbSunday _
            And DatePart("w", start_date) < vbSaturday _
            And DatePart("w", end_date) = vbSaturday Then
        'Start on a weekday and end on saturday
        NetworkDays = NetworkDays - 1
    End If
   
End Function
When I wrote that function, there were no other responses.

FWIW: My solution doesn't do the loops suggested by Capricorn and TextReport, so no matter how far apart your dates are, it'll always take the same amount of time. I checked it against the EXCEL (NETWORKDAYS) function too.

The only trouble with it right now is that it doesn't handle the holidays. Let us know if that's a problem or not.
Any luck with this yet?