VBA Excel，输入框作为整数不匹配

Question

我的代码

Dim a As Integer
a = InputBox("Enter the number", "Program", "", 7000, 6000)
If a = Empty Then
    ' do code...
Else
    MsgBox "Enter the number."
End If

如果我留空字段，Excel 将返回类型不匹配 错误。我想显示一条消息。

Answer 1

由于a是一个Integer，它不能包含String或者是Empty。使用 Variant，然后检查返回的内容:

Dim a As Variant
Dim b As Integer

a = InputBox("Enter the number", "Program", "", 7000, 6000)

If Not IsNumeric(a) Then
    'a is not a number
Else
    'a is a number and can be converted to Integer
    b = CInt(a)
End If