Question

我只想对多个字符串进行简单的查找和替换。例如，我需要用“系统”替换所有“A1”，“A2”，“A3”，用“ACC”替换所有“B1”，“B2”等等......

有谁知道一条好的路线？我只是不确定如何开始这个。谢谢你的帮助！

Answer 1

最后更新迈克尔的评论为更多模式替换更好的方法

如果您使用Excel菜单中的手动Replace选项录制一个简单的宏，您将获得可以整理的代码

第一个选项会将ActiveSheet中包含"I am A1"的单元格更新为"I am System" - 部分字符串匹配
第二个选项只会更新ActiveSheet中仅包含"A1"到"Sytem"的单元格 - 即整个单元格字符串匹配

<强>码

Sub UpdatePartial()
With ActiveSheet.UsedRange
.Replace "A1", "System", xlPart
.Replace "A2", "System", xlPart
.Replace "A3", "System", xlPart
.Replace "B1", "ACC", xlPart
.Replace "B2", "ACC", xlPart
End With
End Sub

Sub UpdateWhole()
With ActiveSheet.UsedRange
.Replace "A1", "System", xlWhole
.Replace "A2", "System", xlWhole
.Replace "A3", "System", xlWhole
.Replace "B1", "ACC", xlWhole
.Replace "B2", "ACC", xlWhole
End With
End Sub

<强>更新

以下代码

使用基本Timer进行比较，替换所有部分字符串，范围从A1-A99和B1-B99
这两种方法是
- 上面的Replace方法在循环中调用198次（即2 * 99）
- RegExp \ variant数组合

在我的测试中，对于1,000,000个小区范围内的198个替换，第二种方法更快。

少量替换会提高Replace的相对速度。更多关于RegExp 更多的细胞也会提高Replace的相对速度。减去RegExp

我没有继续尝试使用Find方法来解析字符串。作为hyrbrid类型的解决方案（ find 然后解析 ut将无法与单个替换或解析竞争）

<强>定时器

Sub MainCaller()
Dim dbTime As Double
Dim lngCnt As Long

dbTime = Timer()
For lngCnt = 1 To 99
Call UpdatePartial("A" & lngCnt, "System")
Call UpdatePartial("B" & lngCnt, "System")
Next lngCnt
Debug.Print Timer() - dbTime
dbTime = Timer()
Call RegexReplace("(A|B)[1-99]", "System")
Debug.Print Timer() - dbTime
End Sub

1）替换Sub

Sub UpdatePartial(StrIn As String, StrOut As String)
ActiveSheet.UsedRange.Replace StrIn, StrOut, xlPart
End Sub

2）Regexp - Variant Array Sub

Sub RegexReplace(StrIn As String, StrOut As String)
    Dim rng1 As Range
    Dim rngArea As Range
    Dim lngRow As Long
    Dim lngCol As Long
    Dim lngCalc As Long
    Dim objReg As Object
    Dim X()


    'On Error Resume Next
    'Set rng1 = Application.InputBox("Select range for the replacement of leading zeros", "User select", Selection.Address, , , , , 8)
    'If rng1 Is Nothing Then Exit Sub
    'On Error GoTo 0

    ActiveSheet.UsedRange
    Set rng1 = ActiveSheet.UsedRange

    'See Patrick Matthews excellent article on using Regular Expressions with VBA
    Set objReg = CreateObject("vbscript.regexp")
    With objReg
    .Pattern = StrIn
    .ignorecase = False
    .Global = True
    End With

   'Speed up the code by turning off screenupdating and setting calculation to manual
   'Disable any code events that may occur when writing to cells
    With Application
        lngCalc = .Calculation
        .ScreenUpdating = False
        .Calculation = xlCalculationManual
        .EnableEvents = False
    End With

    'Test each area in the user selected range

    'Non contiguous range areas are common when using SpecialCells to define specific cell types to work on
    For Each rngArea In rng1.Areas
        'The most common outcome is used for the True outcome to optimise code speed
        If rngArea.Cells.Count > 1 Then
           'If there is more than once cell then set the variant array to the dimensions of the range area
           'Using Value2 provides a useful speed improvement over Value. On my testing it was 2% on blank cells, up to 10% on non-blanks
            X = rngArea.Value2
            For lngRow = 1 To rngArea.Rows.Count
                For lngCol = 1 To rngArea.Columns.Count
                    'replace the leading zeroes
                    X(lngRow, lngCol) = objReg.Replace(X(lngRow, lngCol), StrOut)
                Next lngCol
            Next lngRow
            'Dump the updated array back over the initial range
            rngArea.Value2 = X
        Else
            'caters for a single cell range area. No variant array required
            rngArea.Value = objReg.Replace(rngArea.Value, StrOut)
        End If
    Next rngArea

    'cleanup the Application settings
    With Application
        .ScreenUpdating = True
        .Calculation = lngCalc
        .EnableEvents = True
    End With

    Set objReg = Nothing
End Sub

Excel - 查找并替换多个单词

1 个答案: