将工作簿1数据同步至工作簿2（含定时需求）是否需使用VBA？

Great question! Let’s break this down clearly for you:

核心结论 #

Yes, you do need VBA (or a similar automation tool) to meet your specific requirements. Here’s why:

Why regular formulas won’t work #

You’re right that same-workbook references like ='Sht1'!A1 work perfectly for real-time sync, but cross-workbook formulas have two major limitations for your use case:

1. Dynamic references, not "copied" data: A formula like ='[工作簿1.xlsx]Sheet1'!A:A only links to the source data—it doesn’t paste a static copy. If 工作簿1 is closed, the formula might throw #REF! errors, and any changes to 工作簿1 will immediately update 工作簿2 (which you might not want if you need snapshots at specific times).
2. No scheduling capability: Formulas update passively (when the workbook opens, or when data changes). There’s no built-in way to trigger a formula to run at midnight, 6AM, noon, etc.

VBA Implementation Steps #

Here’s a practical, step-by-step approach to build your automated workflow:

1. The Copy-Paste Macro

First, create a subroutine to handle copying data from 工作簿1 to 工作簿2:

Sub CopyDataToWorkbook2()
    Dim wb1 As Workbook, wb2 As Workbook
    Dim ws1 As Worksheet, ws2 As Worksheet
    
    ' Open 工作簿1 if it's not already open
    On Error Resume Next
    Set wb1 = Workbooks("工作簿1.xlsx")
    On Error GoTo 0
    If wb1 Is Nothing Then
        Set wb1 = Workbooks.Open("C:\Your\Full\Path\工作簿1.xlsx") ' Replace with your actual path
    End If
    
    ' Open 工作簿2 if it's not already open
    On Error Resume Next
    Set wb2 = Workbooks("工作簿2.xlsx")
    On Error GoTo 0
    If wb2 Is Nothing Then
        Set wb2 = Workbooks.Open("C:\Your\Full\Path\工作簿2.xlsx") ' Replace with your actual path
    End If
    
    ' Target the correct worksheets (update sheet names to match yours)
    Set ws1 = wb1.Worksheets("SourceSheet")
    Set ws2 = wb2.Worksheets("TargetSheet")
    
    ' Copy Column A from 工作簿1, paste values to Row 1 of 工作簿2
    ws1.Columns(1).Copy
    ws2.Rows(1).PasteSpecial Paste:=xlPasteValues ' Paste only values to avoid formatting issues
    
    ' Save and close workbooks (adjust based on your needs)
    wb2.Save
    wb1.Close SaveChanges:=False ' Don't save 工作簿1 unless you need to
    wb2.Close
    
    ' Clear the clipboard to avoid Excel's "marching ants"
    Application.CutCopyMode = False
End Sub

2. Schedule the Macro to Run Automatically

Use Excel’s Application.OnTime method to trigger the macro at your desired times. Add this code to the ThisWorkbook module of the workbook that will run the macro:

Private Sub Workbook_Open()
    ' Initialize the schedule when the workbook opens
    ScheduleNextRun
End Sub

Sub ScheduleNextRun()
    Dim nextRunTime As Date
    
    ' Calculate the next scheduled time (midnight, 6AM, noon, 6PM, 11PM)
    Select Case Time
        Case Is < TimeValue("00:00:00")
            nextRunTime = Date + TimeValue("00:00:00")
        Case Is < TimeValue("06:00:00")
            nextRunTime = Date + TimeValue("06:00:00")
        Case Is < TimeValue("12:00:00")
            nextRunTime = Date + TimeValue("12:00:00")
        Case Is < TimeValue("18:00:00")
            nextRunTime = Date + TimeValue("18:00:00")
        Case Is < TimeValue("23:00:00")
            nextRunTime = Date + TimeValue("23:00:00")
        Case Else
            nextRunTime = Date + 1 + TimeValue("00:00:00") ' Next day's midnight
    End Select
    
    ' Schedule the next run of the copy macro
    Application.OnTime nextRunTime, "CopyDataToWorkbook2"
End Sub

Key Notes #

• File Format: Save the workbook with the macro as an .xlsm (Macro-Enabled Workbook) file.
• Macro Security: Enable macros in Excel’s Trust Center (File > Options > Trust Center > Trust Center Settings > Macro Settings) to allow the code to run.
• Excel Must Be Running: The OnTime method only works if Excel is open. If you need this to run even when Excel is closed, pair it with Windows Task Scheduler to launch Excel and trigger the macro automatically.
• Error Handling: Add extra error handling (like checking if worksheets exist) if you want the macro to be more robust.

内容的提问来源于stack exchange，提问作者Jfwhyte8