vb.net - AddressOf 带参数

Question

我需要以一种或另一种方式将 groupID(和另一个整数)链接到我动态添加的按钮。有什么想法吗？

我可以做什么;

AddHandler mybutton.Click, AddressOf PrintMessage

Private Sub PrintMessage(ByVal sender As System.Object, ByVal e As System.EventArgs)
    MessageBox.Show("Dynamic event happened!")
End Sub

我不能做但想做的事；

AddHandler mybutton.Click, AddressOf PrintMessage(groupID)

Private Sub PrintMessage(ByVal groupID as Integer)
    MessageBox.Show("Dynamic event happened!" & groupID .tostring)
End Sub

Answer 1

没有办法用 AddressOf 做到这一点本身。您正在寻找的是一个 lambda 表达式。

AddHandler myButton.Click, Function(sender, e) PrintMessage(groupId)

Private Sub PrintMessage(ByVal groupID as Integer)
    MessageBox.Show("Dynamic event happened!" & groupID .tostring)
End Sub