VBA - 返回数组的函数,每个元素都是一个范围

时间:2013-09-02 10:31:16

标签: arrays vba range

编辑:您可以在下面的“更正代码”下找到修改后的代码

我正在努力研究如何编写将返回数组的VBA函数,其中数组的每个元素都是一个范围对象。理想情况下,我想知道如何编写,以便每个范围对象可以是伪代码中不连续的单元格选择,如下所示:

MyReturnedArrayOfRangeObjects(1)=(A1:C3,A6,B4:B6)

我找到了这个帖子: Using an Array of Ranges in VBA - Excel 这让我很接近,但我必须在我的函数声明中做错事(我认为)。

一堆原始代码与问题无关,所以它已被删除,我做了一个简单的例子,只返回每个数组元素中的一个单元格。当我运行它时,下面的代码在行上返回ByRef类型不匹配:

Set FindLastContentCell(i) = LastCell

除了下面的代码之外,我还尝试将函数声明变为一个变量(无变化)。如果我从上面显示的代码行中删除'Set',我得到一个'赋值左手边的函数调用必须返回Variant或Object':

    Function FindLastContentCell(Optional WB As Workbook = Nothing, Optional JustWS As Worksheet = Nothing) As Range()

    Dim myLastRow As Long, myLastCol As Long, i As Long
    Dim wks As Worksheet
    Dim dummyRng As Range, LastCell As Range
    Dim AnyMerged As Variant
    Dim Proceed As Boolean
    Dim iResponse As Integer

    ' Initialise variables
    Set LastCell = Nothing
    i = 0

    [Bunch of extra code removed]

    If JustWS Is Nothing Then
        If WB Is Nothing Then Set WB = ActiveWorkbook
        For Each wks In WB.Worksheets

            [Bunch of extra code removed]

            If Proceed Then
                With wks
                    myLastRow = 0
                    myLastCol = 0
                    Set dummyRng = .UsedRange
                    On Error Resume Next
                    myLastRow = .Cells.Find("*", after:=.Cells(1), LookIn:=xlFormulas, LookAt:=xlWhole, _
                                searchdirection:=xlPrevious, SearchOrder:=xlByRows).row
                    myLastCol = .Cells.Find("*", after:=.Cells(1), LookIn:=xlFormulas, LookAt:=xlWhole, _
                                searchdirection:=xlPrevious, SearchOrder:=xlByColumns).Column
                End With
                On Error GoTo 0
                Set LastCell = Cells(myLastRow, myLastCol)
                ReDim Preserve FindLastContentCell(0 To i)
                Set FindLastContentCell(i) = LastCell
                i = i + 1        
            End If
        Next wks
    End If

End Function

主叫子是:

Sub temp()

Call FindLastContentCell

End Sub

更正代码


Sub Temp()

Dim rng As Range, results() As Range
Dim x As Variant

results() = FindLastContentCell

End Sub

Function FindLastContentCell(Optional WB As Workbook = Nothing, Optional JustWS As Worksheet = Nothing) As Variant

    'Modded by me

    'From:
    ' http://www.contextures.com/xlfaqApp.html#Unused

    Dim myLastRow As Long, myLastCol As Long
    Dim i As Integer
    Dim wks As Worksheet
    Dim dummyRng As Range, LastCell As Range, LastCells() As Range
    Dim AnyMerged As Variant
    Dim Proceed As Boolean
    Dim iResponse As Integer

    ' Initialise variables
    Set LastCell = Nothing
    i = 0

    ' If the code is only to consider one worksheet passed as JustWS
    ' then determine if something was passed as JustWS
    If JustWS Is Nothing Then
        ' Nothing is found in JustWS, so code runs for each worksheet, either in the passed workbook
        ' object, or else for the ActiveWorkbook
        If WB Is Nothing Then Set WB = ActiveWorkbook
        For Each wks In WB.Worksheets
    ' This is where the code will run from if something was passed as JustWS, otherwise the line below
    ' has no impact on code execution
RunOnce:
            ' Check for merged cells
            AnyMerged = wks.UsedRange.MergeCells
            ' Responde accordingly and let user decide if neccessary
            If AnyMerged = False Then
                Proceed = True
            ElseIf AnyMerged = True Then
                MsgBox "The whole used range is merged. Nothing will be done on this worksheet"
                Proceed = False
            ElseIf IsNull(AnyMerged) Then
                iResponse = MsgBox("There are some merged cells on the worksheet." & vbNewLine & _
                                "This might cause a problem with the calculation of the last cells location." & vbNewLine & vbNewLine & _
                                "Do you want to proceed anyway?", _
                                vbYesNo, _
                                "Calculate Last Cell")
                If iResponse = vbYes Then
                    Proceed = True
                Else
                    Proceed = False
                End If
            Else
                MsgBox "If you this, an error has occured in FindLastContentCell." & vbNewLine & _
                        "Code execution has been stopped."
                Stop
            End If

            If Proceed Then
                With wks
                    myLastRow = 0
                    myLastCol = 0
                    Set dummyRng = .UsedRange
                    On Error Resume Next
                    myLastRow = .Cells.Find("*", after:=.Cells(1), LookIn:=xlFormulas, LookAt:=xlWhole, _
                                searchdirection:=xlPrevious, SearchOrder:=xlByRows).row
                    myLastCol = .Cells.Find("*", after:=.Cells(1), LookIn:=xlFormulas, LookAt:=xlWhole, _
                                searchdirection:=xlPrevious, SearchOrder:=xlByColumns).Column
                End With
                On Error GoTo 0
                Set LastCell = Cells(myLastRow, myLastCol)

                ReDim Preserve LastCells(i)
                Set LastCells(i) = LastCell
                i = i + 1

                ' * This is where code will exit if only a single worksheet is passed.
                ' * Exits if a worksheet object was passed as JustWS, rather than looping through each worksheet
                ' in the workbook variable that was either passed, or which defaults to ActiveWorkbook
                If Not JustWS Is Nothing Then
                    FindLastContentCell = LastCells
                    Exit Function
                End If

            End If
        Next wks
    ' If a worksheet was passed as JustWS
    Else
        GoTo RunJustOneWS
    End If

    FindLastContentCell = LastCells

    ' Exit upon completion of a workbook variable any code
    ' below here is only run if a worksheet is passed as JustWS
    Exit Function

    ' Setup to run the single worksheet that was passed as JustWS
RunJustOneWS:
        Set wks = JustWS
        GoTo RunOnce

End Function

2 个答案:

答案 0 :(得分:0)

根据您的说法,您似乎对VBA中的ArraysRanges没有太明确的想法。在这里,您有一个示例代码,澄清了这两个问题:

Function getRandomRanges() As Range()

    Dim totRanges As Integer: totRanges = 3
    ReDim outRanges(totRanges - 1) As Range

    Set outRanges(0) = Range("A1")
    Set outRanges(1) = Range("B2:C10")
    Set outRanges(2) = Cells(2, 3)

    getRandomRanges = outRanges

End Function

您可以通过执行以下操作来调用此函数:

Dim retrievedRanges() As Range
retrievedRanges = getRandomRanges

您可以通过不同方式使用retrievedRanges;例如:

   retrievedRanges(0).Value = "value I want to write in the A1 range"

答案 1 :(得分:0)

我不确定您要实现的目标,但据我所知,您正在尝试使用工作簿的每个工作表的最后一个单元格构建Ranges数组。

我的建议是创建一个范围的临时数组,并用你想要的Range对象填充它,最后返回这个临时数组。现在我看到之前的“varocarbas”答案只是提出了同样的想法

Function FindLastContentCell(Optional xlsWb As Workbook = Nothing, Optional xlsWs As Worksheet = Nothing) As Range()

    Dim myLastRow As Long, myLastCol As Long
    Dim wks As Worksheet
    Dim lastCell As Range
    Dim arrayTmp() As Range
    Dim index As Integer

    [Bunch of extra code removed]

    If xlsWb Is Nothing then
        Set xlsWb = ActiveWorkbook
    End if
    Redim arrayTemp (wks.Worksheets.Count) As Range
    For Each wks in xlsWb.Worksheets
        myLastRow = wks.UsedRange.Rows.Count
        myLastColumn = wks.UsedRange.Columns.Count
        Set lastCell = wks.Cells(myLastRow,myLastColumn)
        Set arrayTemp(index) = lastCell
        index = index + 1
    Next
    Set FindLastContentCell = arrayTemp

End Function