Question

我循环遍历命名范围并根据单元格是否为空来追加数组。我对VBA中的数组不太熟悉，所以也许我的逻辑不正确。代码会一直覆盖数组中的第一个元素，并且永远不会增加。我不确定为什么即使将一个元素分配给第一个索引后，UBound（myArray）仍然保持为0。

我的代码类似于：

Dim myArray() As Double

ReDim Preserve myArray(0)

    For Each cell In [myRange]
        If cell <> "" Then
            If UBound(myArray) > 0 Then
                ReDim Preserve myArray(0 To UBound(myArray) + 1)
            End If
            myArray(UBound(myArray)) = cell.value
        End If
    Next

Answer 1

使用变量并递增它，如果变量在代码完成时大于ubound，则没有区别：

Sub Test()
Dim myArray() As Double, X As Long
X = 0
ReDim Preserve myArray(X)
For Each cell In Range("Hello")
    If cell <> "" Then
        ReDim Preserve myArray(0 To X)
        myArray(X) = cell.Value
        X = X + 1
    End If
Next
End Sub

Answer 2

将If UBound(myArray) > 0 Then更改为可以解决问题的UBound(myArray) >= 0 Then。

Sub Test()
    Dim myArray() As Double
    ReDim Preserve myArray(0)
    For Each cell In Range("Hello")
        If cell <> "" Then
            If UBound(myArray) >= 0 Then
                myArray(UBound(myArray)) = cell.Value
                ReDim Preserve myArray(0 To UBound(myArray) + 1)
            End If
        End If
    Next
End Sub

Answer 3

扩展Dan Donoghue的解决方案以避免过多的redim（对于Jeanno的解决方案，通过使用变量进行过多的重新计算），我会使用

Dim rng as Range
    Set rng = Range("Hello")

Dim myArray() As Double, X As Long, N As Long
    X = 0
    N = WorksheetFunction.CountIf(rng, "<>")
    ReDim Preserve myArray(X)

For Each cell In rng
    If cell <> "" And X < N Then
        myArray(X) = cell.Value
        X = X + 1
        If X < N Then ReDim Preserve myArray(0 to X)
    End If
Next

在VBA中追加动态数组

3 个答案: