1。 按住 ALT + F11 鍵，然後打開 Microsoft Visual Basic for Applications 窗口。
2。 在 項目-VBA項目 窗格，雙擊 的ThisWorkbook 打開 模塊，然後將以下代碼複製並粘貼到模塊中，請參見屏幕截圖：
Private Sub Workbook_Open()
Worksheets("Sheet1").Range("A2") = Worksheets("Sheet1").Range("A2") + 1
Note: In the above code, Sheet1 and A2 are the sheet and cell which contains the number you want to increase automatically. Please change them to your need.
3. Then you should save the Excel file as Excel Macro-Enabled Workbook format, see screenshot:
From now on, when you open this specific workbook, the number in cell A2 in Sheet1will be added 1 automatically.
Note: This code is only applied to the number cell.
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