ImplicitContainingWorkbookReference

Locates unqualified Workbook.Worksheets/Sheets/Names member calls inside workbook document modules, that implicitly refer to the host workbook.

Inspection type: CodeQualityIssues

Default severity: Warning

Reasoning

Implicit references inside a workbook document module can easily be mistaken for implicit references to the active workbook (ActiveWorkbook), which is the behavior in all other module types. By explicitly qualifying these member calls with 'Me', the ambiguity can be resolved. If the intent is to actually refer to the active workbook, qualify with 'ActiveWorkbook' to prevent a bug

Quick-Fixes

The following quick-fixes are available for this inspection:

  • IgnoreOnce: Adds an '@Ignore annotation to ignore a specific inspection result. Applicable to all inspections whose results can be annotated in a module.
  • IgnoreInModule: Adds an '@IgnoreModule annotation to ignore a inspection results for a specific inspection inside a whole module. Applicable to all inspections whose results can be annotated in a module.
  • QualifyWithMe: Qualifies an implicit reference with 'Me'.

Examples

Each example is a self-contained MCVE showing the feature in a single specific scenario.

Standard Module
Named Module1 by default, these are general-purpose standard procedural modules.
Class Module
Named Class1 by default, these modules define the default interface for an object of that type.
Predeclared Class
A class module with its VB_PredeclaredId attribute set to True (with or without a @PredeclaredId annotation).
Interface Module
Abstract interfaces are class modules (with or without an @Interface annotation) whose default interface is not a class type intended to be instantiated.
UserForm Module
A predeclared class with a design-time visual designer using the MSForms UI framework.
Document Module
Owned by the host application, these class modules belong to the host document and may handle various events fired by the host application.

The following code should trigger this inspection:

ThisWorkbook

Private Sub Example()
    Dim summarySheet As Worksheet
    Set summarySheet = Worksheets("Summary") ' unqualified Worksheets is implicitly querying the containing workbook's Worksheets collection.
End Sub

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