Inspection Details

ImplicitActiveSheetReference

Summary
Locates unqualified Worksheet.Range/Cells/Columns/Rows member calls that implicitly refer to ActiveSheet.
Reasoning
Implicit references to the active worksheet rarely mean to be working with *whatever worksheet is currently active*. By explicitly qualifying these member calls with a specific Worksheet object, the assumptions are removed, the code is more robust, and will be less likely to throw run-time error 1004 or produce unexpected results when the active sheet isn't the expected one.
The following code example(s) would trigger this inspection:

Private Sub Example()
    Dim foo As Range
    Set foo = Sheet1.Range(Cells(1, 1), Cells(1, 10)) ' Worksheet.Cells implicitly from ActiveSheet; error 1004 if that isn't Sheet1.
End Sub

The following code example(s) would not trigger this inspection:

Private Sub Example()
    Dim foo As Range
    With Sheet1
        Set foo = .Range(.Cells(1, 1), .Cells(1, 10)) ' all member calls are made against the With block object
    End With
End Sub


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