vba - Excel VBA switch 语句基于单元格的值

Question

所以我有一个单元格（A2），里面有一个整数值（5）。我想要一个查看单元格的 switch 语句，然后如果该单元格的值大于 50000 做某事，如果该值小于 50000 做某事。

这是我的代码不起作用，它表示代码行“溢出” threshold = 50000：

    Private Sub Worksheet_Change(ByVal Target As Range)

    Application.ScreenUpdating = False

    Dim state As Integer
    Dim threshold As Integer

    threshold = 50000
    state = Sheet1.Range("A2").Value

    Select Case state
        Case state < threshold
            'Do something
            Debug.Print (state)
        Case Is >= threshold
            'Do something
            Debug.Print (state)
        End Select

End Sub

我怎样才能解决这个问题？

Answer 1

问题在这里：
Sheet1.Range.Value("$A$2")

使用Select Case

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
    Dim state As Integer
    state = CInt(Sheet1.Range("$A$2"))
    Select Case state
        Case Is > Target.Value
            Debug.Print "less than " & state
        Case Is < Target.Value
            Debug.Print "greater than " & state
        Case Else
            Debug.Print "Equals"
    End Select
End Sub

使用if语句

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
    Dim state As Integer
    state = CInt(Sheet1.Range("$A$2"))
    If Target.Value < state Then
        Debug.Print "less than " & state
    ElseIf Target.Value > state Then
        Debug.Print "greater than " & state
    Else
        Debug.Print "Equals"
    End If
End Sub

POST_EDIT:
50000 对于数据类型来说太大了Integer，因此将其作为Long数据类型进行标注以避免溢出

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
    Dim threshold As Long
    threshold = 50000
    Select Case Target.Value
        Case Is >= threshold
            Debug.Print "greater or equal " & threshold
        Case Is < Target.Value
            Debug.Print "smaller than " & threshold
        Case Else
            Debug.Print "Can't calculate! Error"
    End Select
End Sub

Answer 2

你的 Range 陈述是错误的

Private Sub Worksheet_Change(ByVal Target As Range)

    Application.ScreenUpdating = False

    Dim state As Integer

    state = Sheet1.Range("A2").Value

    Select Case state
        Case Is < 5
            'Do something
            Debug.Print (state)
        Case Is > 5
            'Do something

        End Select

End Sub

你没有提到如果 state = 5 该怎么办？