如何在Excel(VBA)中应用高级筛选器后获取可见行的范围

Question

下面是通过使用Sheet2上的值范围(条件范围)将高级过滤器应用于Sheet1工作表(列表范围)上的列A的代码

Range("A1:A100").AdvancedFilter Action:=xlFilterInPlace, CriteriaRange:= _
        Sheets("Sheet2").Range("A1:A10"), Unique:=False

运行此代码后,我需要对屏幕上当前可见的行执行某些操作.

目前我使用这样的代码

For i = 1 to maxRow
   If Not ActiveSheet.Row(i).Hidden then
     ...do something that I need to do with that rows
   EndIf
Next

应用高级过滤器后,是否有任何简单的属性可以为我提供一系列行？

Answer 1

ActiveSheet.Range("A1:A100").Rows.SpecialCells(xlCellTypeVisible)

这产生了一个Range对象.

Answer 2

Lance的解决方案适用于大多数情况.

但是,如果您处理大型/复杂的电子表格,您可能会遇到" SpecialCells问题 ".简而言之,如果创建的范围导致超过8192个非连续区域(并且可能发生),那么当您尝试访问SpecialCells并且您的代码无法运行时,Excel将抛出错误.如果您的工作表足够复杂,您希望遇到此问题,那么建议您坚持使用循环方法.

值得注意的是,问题不在于SpecialCells属性本身,而在于Range对象.这意味着,只要您尝试获取可能非常复杂的范围对象,您应该雇用一个错误处理程序,或者按照您已经完成的方式执行操作,这将导致您的程序在该范围的每个元素上工作(拆分范围).

另一种可能的方法是返回一个Range对象数组,然后循环遍历该数组.我已经发布了一些示例代码来玩.但是应该注意的是,如果您希望遇到所描述的问题,或者您只是想确保您的代码是健壮的,那么您真的只应该为此烦恼.否则它只是不必要的复杂性.

Option Explicit

Public Declare Function GetTickCount Lib "kernel32" () As Long

Public Sub GenerateProblem()
    'Run this to set up an example spreadsheet:
    Dim row As Long
    Excel.Application.EnableEvents = False
    Sheet1.AutoFilterMode = False
    Sheet1.UsedRange.Delete
    For row = 1 To (8192& * 4&) + 1&
        If row Mod 3& Then If Int(10& * Rnd)  7& Then Sheet1.Cells(row, 1&).value = "test"
    Next
    Sheet1.UsedRange.AutoFilter 1&, ""
    Excel.Application.EnableEvents = True
    MsgBox Sheet1.UsedRange.SpecialCells(xlCellTypeVisible).address
End Sub

Public Sub FixProblem()
    'Run this to see various solutions:
    Dim ranges() As Excel.Range
    Dim index As Long
    Dim address As String
    Dim startTime As Long
    Dim endTime As Long
    'Get range array.
    ranges = GetVisibleRows
    'Do something with individual range objects.
    For index = LBound(ranges) To UBound(ranges)
        ranges(index).Interior.ColorIndex = Int(56 * Rnd + 1)
    Next

    'Get total address if you want it:
    startTime = GetTickCount
    address = RangeArrayAddress(ranges)
    endTime = GetTickCount
    Debug.Print endTime - startTime, ; 'Outputs time elapsed in milliseconds.

    'Small demo of why I used a string builder. Straight concatenation is about
    '10 times slower:
    startTime = GetTickCount
    address = RangeArrayAddress2(ranges)
    endTime = GetTickCount
    Debug.Print endTime - startTime
End Sub

Public Function GetVisibleRows(Optional ByVal ws As Excel.Worksheet) As Excel.Range()
    Const increment As Long = 1000&
    Dim max As Long
    Dim row As Long
    Dim returnVal() As Excel.Range
    Dim startRow As Long
    Dim index As Long
    If ws Is Nothing Then Set ws = Excel.ActiveSheet
    max = increment
    ReDim returnVal(max) As Excel.Range
    For row = ws.UsedRange.row To ws.UsedRange.Rows.Count
        If Sheet1.Rows(row).Hidden Then
            If startRow  0& Then
                Set returnVal(index) = ws.Rows(startRow & ":" & (row - 1&))
                index = index + 1&
                If index > max Then
                    'Redimming in large increments is an optimization trick.
                    max = max + increment
                    ReDim Preserve returnVal(max) As Excel.Range
                End If
                startRow = 0&
            End If
        ElseIf startRow = 0& Then startRow = row
        End If
    Next
    ReDim Preserve returnVal(index - 1&) As Excel.Range
    GetVisibleRows = returnVal
End Function

Public Function RangeArrayAddress(ByRef value() As Excel.Range, Optional lowerindexRV As Variant, Optional upperindexRV As Variant) As String
    'Parameters left as variants to allow for "IsMissing" values.
    'Code uses bytearray string building methods to run faster.
    Const incrementChars As Long = 1000&
    Const unicodeWidth As Long = 2&
    Const comma As Long = 44&
    Dim increment As Long
    Dim max As Long
    Dim index As Long
    Dim returnVal() As Byte
    Dim address() As Byte
    Dim indexRV As Long
    Dim char As Long
    increment = incrementChars * unicodeWidth 'Double for unicode.
    max = increment - 1& 'Offset for array.
    ReDim returnVal(max) As Byte
    If IsMissing(lowerindexRV) Then lowerindexRV = LBound(value)
    If IsMissing(upperindexRV) Then upperindexRV = UBound(value)
    For index = lowerindexRV To upperindexRV
        address = value(index).address
        For char = 0& To UBound(address) Step unicodeWidth
            returnVal(indexRV) = address(char)
            indexRV = indexRV + unicodeWidth
            If indexRV > max Then
                max = max + increment
                ReDim Preserve returnVal(max) As Byte
            End If
        Next
        returnVal(indexRV) = comma
        indexRV = indexRV + unicodeWidth
        If indexRV > max Then
            max = max + increment
            ReDim Preserve returnVal(max) As Byte
        End If
    Next
    ReDim Preserve returnVal(indexRV - 1&) As Byte
    RangeArrayAddress = returnVal
End Function

Public Function RangeArrayAddress2(ByRef value() As Excel.Range, Optional lowerIndex As Variant, Optional upperIndex As Variant) As String
    'Parameters left as variants to allow for "IsMissing" values.
    'Code uses bytearray string building methods to run faster.
    Const incrementChars As Long = 1000&
    Const unicodeWidth As Long = 2&
    Dim increment As Long
    Dim max As Long
    Dim returnVal As String
    Dim index As Long
    increment = incrementChars * unicodeWidth 'Double for unicode.
    max = increment - 1& 'Offset for array.
    If IsMissing(lowerIndex) Then lowerIndex = LBound(value)
    If IsMissing(upperIndex) Then upperIndex = UBound(value)
    For index = lowerIndex To upperIndex
        returnVal = returnVal & (value(index).address & ",")
    Next
    RangeArrayAddress2 = returnVal
End Function