private void SubForm1_FormClosing(object sender, FormClosingEventArgs e)
{
if (end_ser)
{
MessageBox.Show("未关闭串口!");
e.Cancel = true;//关键语句
}
}
c#Winform 关闭前提示是否关闭程序
最新推荐文章于 2023-08-05 22:53:52 发布