我的代码有效，但问题是运行时间越来越长，每次使用宏时完成计算所需的时间都会增加。我已经尝试过使用sytax进行各种变化和修改，但由于我对VBA很陌生，所以我没有取得很大的进步。这是我正在运行的代码（注意，它作为子集运行，ScreenUpdate = False）：
Public Sub deleteRows()
Dim lastRow As Long
Dim rng As Range
With ActiveSheet
.AutoFilterMode = False
lastRow = .Cells(.Rows.Count, 2).End(xlUp).Row
'~~> Set the range of interest, no need to include the entire data range
With .Range("B2:F" & lastRow)
.AutoFilter Field:=2, Criteria1:="=0.000", Operator:=xlFilterValues
.AutoFilter Field:=5, Criteria1:="=0.000", Operator:=xlFilterValues
End With
.Range("B1:F" & lastRow).SpecialCells(xlCellTypeVisible).EntireRow.Delete
.AutoFilterMode = False
Rows("1:1").Select
Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove
End With
MsgBox Format(Time - start, "hh:mm:ss")
End Sub
此代码基本上通过删除整行从数据中删除零值结果。最初，它在大约12秒钟内运行，但很快就变成了55秒，这已经发展成为增加的长时间运行时间，而且速度很快。现在在5分钟范围内。下面是一个电子表格，其中包含已记录的运行时和相应的更改：
Runtime Changes
6:30 None
7:50 None
5:37 Manually stepped through code
7:45 Run with .cells instead of .range("B1:B" & lastRow)
5:21 Run with .Range(B:B) instead of .range("B1:B" & lastRow)
9:20 Run with application.calculation disabled/enabled, range unchanged
5:35 Run with application.enableEvents disabled/enabled, range unchanged
11:08 Run with application.enableEvents disabled/enabled, Range(B:B)
5:12 None
7:57 Run with Alternative code (old code)
5:45 Range changed to .Range(cells(2,2), Cells(lastRow,2)
10:25 Range changed to .Range(cells(2,2), Cells(lastRow,2), Application.Calculation Disabled/enabled
5:34 Range set to rngB for .delete portion (range assigned to variable)
9:59 Range set as rng("B1:F" & lastRow)
5:58 Changed system settings for Excel to "High Priority", code reverted to original
9:41 Rerun of old code for comparison
9:26 Reun with change in old code criteria to "0.000"
0:10 Moved SpecialCells……..Delete into 2nd With/End With
5:15 Rerun SpecialCells……..Delete into 2nd With/End With
11:31 Rerun SpecialCells……..Delete into 2nd With/End With
11:38 Excel restart; Rerun SpecialCells……..Delete into 2nd With/End With
5:18 Excel restart; Rerun SpecialCells……..Delete into 2nd With/End With
6:49 Removed 2nd with 'loop'; all data put into first with statement
我在网上做了一些reasearh，看起来这在使用大型数据集时可能是Excel的一个已知问题，而且我的行数约为51k，我可以看到这可能是这种情况。 ＆＃34; ...在早期版本的Excel中需要几秒钟才能完成的宏可能需要几分钟才能在更高版本的Excel中完成。或者，如果您第二次运行宏，则宏可能需要两倍于第一次运行。＆＃34;资料来源：http://support.microsoft.com/kb/199505
所以我的问题是：有没有什么方法可以让它运行得更快，就像它最初那样？为什么会这样？
答案 0 :(得分：5)
以下是我通过将数据传输到数组然后将数组打印到工作表上所做的几项测试的结果。这比任何复制/粘贴以及任何类型的.Delete方法都要高效得多，尤其是在循环中调用时。
这些都是在大约一秒内执行，并且＆＃34;删除＆＃34;每个都有35000多行。
Start 8/6/2014 1:51:14 PM
Start copy data to array 8/6/2014 1:51:14 PM lastRow=50000
End copy data to array 8/6/2014 1:51:14 PM for 12270 rows
Start print to sheet 8/6/2014 1:51:14 PM
End print to sheet 8/6/2014 1:51:14 PM
Finished 8/6/2014 1:51:14 PM
Start 8/6/2014 1:51:15 PM
Start copy data to array 8/6/2014 1:51:15 PM lastRow=50000
End copy data to array 8/6/2014 1:51:15 PM for 12339 rows
Start print to sheet 8/6/2014 1:51:15 PM
End print to sheet 8/6/2014 1:51:15 PM
Finished 8/6/2014 1:51:15 PM
Start 8/6/2014 1:51:16 PM
Start copy data to array 8/6/2014 1:51:16 PM lastRow=50000
End copy data to array 8/6/2014 1:51:16 PM for 12275 rows
Start print to sheet 8/6/2014 1:51:16 PM
End print to sheet 8/6/2014 1:51:16 PM
Finished 8/6/2014 1:51:16 PM
Start 8/6/2014 1:51:17 PM
Start copy data to array 8/6/2014 1:51:17 PM lastRow=50000
End copy data to array 8/6/2014 1:51:17 PM for 12178 rows
Start print to sheet 8/6/2014 1:51:17 PM
End print to sheet 8/6/2014 1:51:17 PM
Finished 8/6/2014 1:51:17 PM
Start 8/6/2014 1:51:18 PM
Start copy data to array 8/6/2014 1:51:18 PM lastRow=50000
End copy data to array 8/6/2014 1:51:18 PM for 12130 rows
Start print to sheet 8/6/2014 1:51:18 PM
End print to sheet 8/6/2014 1:51:18 PM
Finished 8/6/2014 1:51:18 PM
以下是我用来测试它的代码：
Sub TimerLoop()
Dim i As Integer
For i = 1 To 5
deleteRows
Next
End Sub
这是修改后的功能;请注意我更改了过滤器参数以确保我将删除足够多的行。在运行之前更改回自己的标准。
Public Sub deleteRows()
Range("B2:F50000").Formula = "=Round(Rand(),2)"
Dim values As Variant
Dim rng As Range
Dim visible As Range
Dim a As Range, r As Range
Dim nextRow As Long
Dim lastRow As Long
Dim totalRows As Long
Dim i As Long
Application.ScreenUpdating = False
Debug.Print "Start " & Now()
With ActiveSheet
.AutoFilterMode = False
lastRow = .Cells(.Rows.Count, 2).End(xlUp).Row
'Use a range variable instaead of literal construction:
Set rng = .Range("B2:F" & lastRow)
With rng
.AutoFilter Field:=2, Criteria1:=">0.500", Operator:=xlFilterValues
.AutoFilter Field:=5, Criteria1:=">0.500", Operator:=xlFilterValues
End With
'Assign the values to an array:
Debug.Print "Start copy data to array " & Now() & vbTab & "lastRow=" & lastRow
Set visible = rng.SpecialCells(xlCellTypeVisible)
For Each a In visible.Areas
For Each r In a.Rows
totalRows = totalRows + 1
'values(i) = r.Value
Next
Next
ReDim values(1 To totalRows)
For Each a In visible.Areas
For Each r In a.Rows
i = i + 1
values(i) = r.Value
Next
Next
'Turn off autofilter, clear the cells
.AutoFilterMode = False
rng.ClearContents
Debug.Print "End copy data to array " & Now() & " for " & totalRows & " rows"
'Put the values back in to the sheet, from the array
Debug.Print "Start print to sheet " & Now()
rng.Rows(1).Resize(totalRows).Value = _
Application.Transpose(Application.Transpose(values))
Debug.Print "End print to sheet " & Now()
.AutoFilterMode = False
Rows("1:1").Select
Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove
End With
Debug.Print "Finished " & Now() & vbCrLf & vbCrLf
Application.ScreenUpdating = True
End Sub
答案 1 :(得分：1)
如果您的电子表格中有公式，我会在开头添加Application.Calculation = xlCalculationManual，最后添加Application.Calculation = xlCalculationAutomatic，以确保每次删除行时都不会重新计算。