Since Excel takes the calculation mode from the first workbook opened during a
session, the only sure way to set calculation mode for a particular workbook
would be through code that runs when a workbook is opened or activated.
Private Sub Workbook_Activate()
Application.Calculation = xlCalculateManual
Application.Calculation = xlCalculationAutomatic
End Sub
Private Sub Workbook_Open()
Application.Calculation = xlCalculateManual
Application.Calculation = xlCalculationAutomatic
End Sub
Gord Dibben Excel MVP
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