由於源文件太大，宏運行非常慢

Question

我有下面的代碼，它可以幫助我打開從該文件到當前工作簿的文件復制數據。 它還過濾數據並刪除不需要的行。 問題是源文件太大，文件大小最大為30MB，其中包含A1：BG1018576范圍內的數據

一旦打開文件，工作就是復制特定的列並通過它，它還將過濾數據並刪除不需要的行。

Sub Position()
    Dim b1 As Workbook, b2 As Workbook
    Dim ws As Worksheet
    Dim src As Worksheet
    Dim trg As Worksheet
    Dim Fname As String
    Dim LR As Long
    Dim LR1 As Long

    Set b1 = ThisWorkbook 
    Fname = Application.GetOpenFilename(FileFilter:="Excel Files (*.xls*), *.xls*", Title:="Select a File")

    If Fname = "False" Then Exit Sub

    Set b2 = Workbooks.Open(Fname)
    Set b2 = ActiveWorkbook

    For Each ws In b2.Sheets
        If ws.Visible Then
            ws.Copy after:=b1.Sheets(b1.Sheets.Count)
        End If
    Next ws

    b2.Close

    Set src = ThisWorkbook.Worksheets("CR")
    Set trg = ThisWorkbook.Worksheets("Data")
    src.Range("B:B").Copy Destination:=trg.Range("E1")
    src.Range("G:G").Copy Destination:=trg.Range("D1")
    src.Range("T:T").Copy Destination:=trg.Range("F1")
    src.Range("BB:BB").Copy Destination:=trg.Range("G1")
    src.Range("BG:BG").Copy Destination:=trg.Range("H1")        
    src.Range("D:D").Copy Destination:=trg.Range("I1")        
    src.Range("F:F").Copy Destination:=trg.Range("J1")                
    src.Delete

    With Worksheets("Data") '<--| always specify full worksheet reference (change "MyWantedSheet" with your actual sheet name)
        With .Columns("D:D") '.Resize(.Cells(.Rows.Count, "B").End(xlUp).Row) '<--| refer to wanted column range down to its last non empty cell
            .AutoFilter '<--| remove possible preeeding autofilter filtering
            .AutoFilter Field:=1, Criteria1:="=" '<--| apply current filtering
                .Resize(.Parent.Cells(.Parent.Rows.Count, "E").End(xlUp).Row - 1).Offset(1).SpecialCells(xlCellTypeVisible).Rows.Delete '<--|delete visible rows other than the first ("headers") one
        End With
        .AutoFilterMode = False '<--| remove drop-down arrows
    End With

    With Worksheets("Data") '<--| always specify full worksheet reference (change "MyWantedSheet" with your actual sheet name)
        With .Columns("H:H") '.Resize(.Cells(.Rows.Count, "B").End(xlUp).Row) '<--| refer to wanted column range down to its last non empty cell
            .AutoFilter '<--| remove possible preeeding autofilter filtering
            .AutoFilter Field:=1, Criteria1:="N" '<--| apply current filtering
                .Resize(.Parent.Cells(.Parent.Rows.Count, "E").End(xlUp).Row - 1).Offset(1).SpecialCells(xlCellTypeVisible).Rows.Delete '<--|delete visible rows other than the first ("headers") one
        End With
        .AutoFilterMode = False '<--| remove drop-down arrows
    End With

    Sheets("Data").Select
    Sheets("DATA").Range("G1:G" & Sheets("DATA").UsedRange.Rows.Count).Select
    Selection.Replace What:="-", Replacement:="", LookAt:=xlPart, _
        SearchOrder:=xlByRows, MatchCase:=False, SearchFormat:=False, _
        ReplaceFormat:=False
End sub 

處理數據需要花費太多時間，是否有其他方法可以使此過程更快

Answer 1

我總是要降低宏速度的一件事是將文件擴展名更改為二進制文件。 您仍然可以擁有宏，它會將文件大小減少一半。

在我的代碼開始時，我總是：

Sub GettingStarted()
    Application.ScreenUpdating = False
    Application.DisplayAlerts = False
End Sub

在代碼末尾，我總是：

Sub BackToNormal()
    Application.ScreenUpdating = True
    Application.DisplayAlerts = True
End Sub

如果您不需要代碼在運行時進行計算，則還可以包括

Application.Calculation = xlCalculationManual

完成后，請務必將其更改回

Application.Calculation = xlCalculationAutomatic