Vb.net 修改类的特定实例

假设我有一个这样的类：

Public Class Car

Private _id As Integer

Public Sub New()

End Sub

Public Property ID As Integer
    Get
        Return _id
    End Get
    Set(ByVal value As Integer)
        _id = value
    End Set
End Property
End Class

我有一个按钮可以执行以下操作：

   Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    Dim Stuff As New Car
    'Other code..

End Sub

我按了10次按钮

---

如何修改此类的特定实例（例如，在我第三次单击按钮时创建的实例）以修改其属性？

您的

内容
实例仅存在于按钮单击事件中。要使其具有更大/更长的
范围
，您需要在其他地方声明它：

Dim Stuff As Car            ' what it is

Private Sub Button2_Click(...
  Stuff = New Car     ' actual instancing/creation of Stuff of Type Car
  'Other code..

End Sub

要使每次点击次数成倍增加，您需要某种集合来存储它们

Dim Cars As New List(Of Car)         ' many other collections will work
Dim CarItem As Car                   ' car instances to put in it

Private Sub Button2_Click(... 
  CarItem = New Car     ' instance of Type Car

  Cars.Add(CarItem)

End Sub

现在，要对您制造的第三辆车做些什么，参考车（3）：

你每次都在用那辆
车
对象做什么吗？或者它只是处理程序func的本地函数。
Cars(3).Make = "Kia"
Cars(3).Color = "Blue"