从Access使用VBA运行后从任务管理器中删除Excel任务

Question

我现在借此机会在这里问一下,我真的尝试了很多不同的方式,但似乎我无法在任务管理器中关闭Excel任务,它一直挂起,直到我完全关闭Access,烦人,因为我无法使用Access中的Excel运行两个不同的作业.第二份工作会给我错误.

我已经对我仍然可以摆脱Excel的地方做了一些评论.代码的目的是运行一些查询并将数据导出到Excel,然后锁定Excel工作表,以便用户只能填写数据的答案.

码:

Private Sub Command65_Click()
Dim r As Double
'On Error GoTo Error_Handler
Dim objExcel As Excel.Application
Dim objWorkbook As Workbook
Dim objWorksheet As Worksheet
Dim dbs As DAO.Database
Dim rSt As DAO.Recordset
Set dbs = CurrentDb
Set rSt = CurrentDb.OpenRecordset("qry_VC_Confirmation")

Set objExcel = CreateObject("Excel.Application")
objExcel.Visible = True

'objExcel.Quit  ' at this point it still works to close again
'Set objExcel = Nothing ' at this point it will remove from task manager

Set objWorkbook = objExcel.Workbooks.Add
Set objWorksheet = objWorkbook.Worksheets(1)

'Set objWorkbook = Nothing ' can close still at this stage
'Set objWorksheet = Nothing ' can close still at this stage
'objExcel.Quit  ' at this point it still works to close again ?
'Set objExcel = Nothing ' at this point it still will not remove from task manager

iFld = 0
irow = 1
For icol = 1 To (rSt.Fields.count)
    objWorksheet.Cells(irow, icol) = rSt.Fields(iFld).Name
    objWorksheet.Cells(irow, icol).Interior.ColorIndex = 1
    objWorksheet.Cells(irow, icol).Font.ColorIndex = 2
    objWorksheet.Cells(irow, icol).Font.Bold = True
    iFld = iFld + 1
Next

'Set objWorkbook = Nothing '
'Set objWorksheet = Nothing '
'objExcel.Quit  ' at this point it still works to close Excel again ?
'Set objExcel = Nothing ' at this point it will still remove from task manager

irow = 2
If Not rSt.BOF Then rSt.MoveFirst
Do Until rSt.EOF
    iFld = 0
    lRecords = lRecords + 1
    For icol = 1 To (rSt.Fields.count)
        objWorksheet.Cells(irow, icol) = rSt.Fields(iFld)
        iFld = iFld + 1
        Next
        irow = irow + 1
        rSt.MoveNext
Loop
r = irow - 1
Columns("A:F").EntireColumn.AutoFit

ActiveSheet.Protection.AllowEditRanges.Add Title:="Unprotected", Range:=Range("F2:F" & r)
ActiveSheet.Protect DrawingObjects:=True, Contents:=True, Scenarios:=True, Password:="secret"

objWorkbook.SaveAs ("C:\Dropbox\VC_Confirmation.xlsx")

ExitSub:
Set objWorkbook = Nothing '
Set objWorksheet = Nothing '
objExcel.Quit  ' at this point it still works to close excel again ?
Set objExcel = Nothing ' at this point it will **NOT** remove from task manager

Exit Sub

Error_Handler:
MsgBox Error$
Resume ExitSub

End Sub

Answer 1

您在评论中提到您已重置代码(即按下停止按钮).这意味着代码中杀死excel的部分没有运行,从而留下了一个excel的开放会话.您的代码存在一个小的(可能是语义上的)问题,但我不相信这是导致您的问题的原因.无论如何,你应该像这样正确地关闭应用程序.

ExitSub:
    If Not objWorksheet Is Nothing Then
        set objWorksheet = Nothing
    End If
    ' You have to check for the workbook's existence before 
    '    you try to close something that isn't there. This avoids runtime errors.
    '    Since your error handler points you back here, this code always runs, so
    '    The workbook might not be open.
    If Not objWorkbook Is Nothing Then
        objWorkbook.close
        Set objWorkbook = Nothing
    End If
    ' Same goes for quitting the application
    If Not objExcel Is Nothing Then
        objExcel.Quit
        Set objExcel = Nothing
    End If

    Exit Sub
Error_Handler:
    ' error handling code here
     Resume ExitSub
End Sub