private void FormMain_KeyDown(object sender, KeyEventArgs e)
{
    if ((e.KeyCode == Keys.S) && (e.Modifiers == Keys.Control))
        checkBoxAck.Checked = !checkBoxAck.Checked;
}

确保将窗体的KeyPreview设置为true.

问候

Make sure that KeyPreview of the form is set to true.

Regards

有两个选项供您选择:

There are two options for you:

1. 将keyEventArgs属性Modifier与Key.Control(与您在示例中一样，不是 Keys.ControlKey)进行比较.
   
   

1. Compare the keyEventArgs property Modifier against Key.Control (not Keys.ControlKey as you did in your sample).
   
   

private void frlLOOKUP_KeyDown(object sender, KeyEventArgs e)
{
    if (e.Modifiers == Keys.Control && e.KeyCode == Keys.S)
    {
        check_search.Checked = !check_search.Checked;
    }

}

check_search.Text = "Check&Search";

This will allow you to toggle the CheckBox by pressing ALT + S.

问候，

曼弗雷德(Manfred)

Regards,

Manfred