vb.net 按钮失去焦点

Public Class Form1
 
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        ' 在窗体加载时为按钮添加LostFocus事件处理程序
        AddHandler Button1.LostFocus, AddressOf Button1_LostFocus
    End Sub
 
    Private Sub Button1_LostFocus(sender As Object, e As EventArgs)
        ' 按钮失去焦点时执行的代码
        MessageBox.Show("按钮失去焦点")
    End Sub
 
End Class