阻止用户关闭通过C#程序打开的应用程序

this.ControlBox = false;

protected override void WndProc(ref Message m)
{
    if (m.Msg == 0x0010) // WM_CLOSE
    {
        // 替换为其他操作
        return;
    }
    base.WndProc(ref m);
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    DialogResult result = MessageBox.Show("确定要关闭应用程序吗？", "提示", MessageBoxButtons.YesNo);
    if (result == DialogResult.No)
    {
        e.Cancel = true;
    }
}

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    this.WindowState = FormWindowState.Minimized;
    e.Cancel = true;
}