private void AlarmForm_Load(object sender, EventArgs e)
{
var width = richTextBoxAlarmContent.Width;
var formmWidth = this.Width;
richTextBoxAlarmContent.Left = (formmWidth - width) / 2;
AlarmHelper.StartAlarm();
}
private void AlarmForm_FormClosing(object sender, FormClosingEventArgs e)
{
AlarmHelper.StopAlarm();
}