Excel VBA 'dim as Variant' 不允许'for each' 循环

问题描述

我的代码陷入了困境。我正在尝试删除占据同一合并单元格的图表，但出现错误。如果未将剪贴图设置为变体，则代码将无法编译 for each ScrapChart in AllChartsInBox()，但随后我在尝试运行 ScrapChart.delete 时收到运行时错误 91。

为什么 Scrapchart 必须设置为变体，而 SheetChart 在设置为 ChartObject 时在 For Each SheetChart In Ws_Charts.ChartObjects 循环中工作正常？

option explicit
Dim NumberofChartsinRange,ChartBoxIndex As Long
Dim SheetChart,AllChartsInBox() As ChartObject
Dim ScrapChart As Variant

Set ChartBox = Ws_Charts.Range("A1:F6")
Ws_Charts.Cells(1,1).Formula2 = formulastring

ChartBox.Merge
ChartBox.HorizontalAlignment = xlRight
ChartBox.VerticalAlignment = xlBottom

NumberofChartsinRange = 0

If Ws_Charts.ChartObjects.Count = 0 Then

Else

    ReDim AllChartsInBox(Ws_Charts.ChartObjects.Count - 1)
    
    For Each SheetChart In Ws_Charts.ChartObjects
        If Not Intersect(SheetChart.TopLeftCell,ChartBox) Is nothing Then
            NumberofChartsinRange = NumberofChartsinRange + 1
            Set AllChartsInBox(ChartBoxIndex) = SheetChart: ChartBoxIndex = ChartBoxIndex + 1
        End If
    Next
End If

If NumberofChartsinRange > 1 Then
    For Each ScrapChart In AllChartsInBox
        ScrapChart.Delete
    Next ScrapChart
End If

解决方法

您可以一次性完成 ChartObjects 集合：

Dim SheetChart,co As ChartObject,ChartBox As Range
Dim tmp As ChartObject,foundOne As Boolean,i As Long

Set ChartBox = Ws_charts.Range("A1:F6")
Ws_charts.Cells(1,1).Formula2 = formulastring

ChartBox.Merge
ChartBox.HorizontalAlignment = xlRight
ChartBox.VerticalAlignment = xlBottom

For i = Ws_charts.ChartObjects.Count To 1 Step -1
    Set co = Ws_charts.ChartObjects(i)
    If Not Intersect(co.TopLeftCell,ChartBox) Is Nothing Then
        If Not foundOne Then 'first chart found?
            Set tmp = co
            foundOne = True
        Else
            'multiple charts - delete the first one and this one...
            If Not tmp Is Nothing Then tmp.Delete
            co.Delete
        End If
    End If
Next i

charts excel excel foreach