我想显示一个MessageBox来确认退出之前让表单关闭。所以，创建一个FormClosing事件。 private void Form_Main_FormClosing(object sender, FormClosingEventArgs e)
{
//nothing here for now
}
我有MessageBox显示两次。调试工具显示代码以某种方式通
我想要它，所以当单击“x”按钮时会出现一个消息框，说“你确定要退出？”那么如果“是”则关闭，如果“否”则保持打开。所以我的代码是： Dim a As Integer
a = MessageBox.Show("Are you sure you want to exit?", _
"Vice Versa 1.0", _
MessageBoxButtons.YesN
Private Sub frmMain_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
e.Cancel = True
Me.WindowState = FormWindowState.Minimized
End Sub