examples: Add VBA module and call in all worksheets

Examples/VBA/AddModuleMultpleWorksheetVBA.ps1

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+$xlfile = "$env:temp\test.xlsm"
+Remove-Item $xlfile -ErrorAction SilentlyContinue
+
+ConvertFrom-Csv @"
+Region,Item,TotalSold
+West,screwdriver,98
+West,kiwi,19
+North,kiwi,47
+West,screws,48
+West,avocado,52
+East,avocado,40
+South,drill,61
+North,orange,92
+South,drill,29
+South,saw,36
+"@ | Export-Excel $xlfile -TableName 'Sales' -WorksheetName 'Sales' -AutoSize
+
+$Excel = ConvertFrom-Csv @"
+Supplier,Item,TotalBought
+Hardware,screwdriver,98
+Groceries,kiwi,19
+Hardware,screws,48
+Groceries,avocado,52
+Hardware,drill,61
+Groceries,orange,92
+Hardware,drill,29
+HArdware,saw,36
+"@ | Export-Excel $xlfile -TableName 'Purchases' -WorksheetName 'Purchases' -PassThru -AutoSize
+
+$wb = $Excel.Workbook
+$wb.CreateVBAProject()
+
+# Create a module with a sub to highlight the selected row & column of the active table.
+# https://docs.microsoft.com/en-gb/office/vba/excel/Concepts/Cells-and-Ranges/highlight-the-active-cell-row-or-column
+$codeModule = @"
+Public Sub HighlightSelection(ByVal Target As Range)
+    ' Clear the color of all the cells
+    Cells.Interior.ColorIndex = 0
+    If Target.Cells.Count > 1 Then Exit Sub
+        Application.ScreenUpdating = False
+        With ActiveCell
+            ' Highlight the row and column that contain the active cell, within the current region
+            Range(Cells(.Row, .CurrentRegion.Column), Cells(.Row, .CurrentRegion.Columns.Count + .CurrentRegion.Column - 1)).Interior.ColorIndex = 38
+            Range(Cells(.CurrentRegion.Row, .Column), Cells(.CurrentRegion.Rows.Count + .CurrentRegion.Row - 1, .Column)).Interior.ColorIndex = 24
+        End With
+    Application.ScreenUpdating = True
+End Sub
+"@
+
+$module = $wb.VbaProject.Modules.AddModule("PSExcelModule")
+$module.Code = $codeModule
+
+# Add a call to the row & column highlight sub on each worksheet.
+$codeSheet = @"
+Private Sub Worksheet_SelectionChange(ByVal Target As Range)
+    HighlightSelection Target
+End Sub
+"@
+
+foreach ($sheet in $wb.Worksheets) {
+    $sheet.CodeModule.Code = $codeSheet
+}
+
+Close-ExcelPackage $Excel -Show