public static TradingSystemBoardForm Ins()
{
if (_instance == null)
{
_instance = new TradingSystemBoardForm();
}
return _instance;
}
private void Form_Closing(Object sender, FormClosingEventArgs e)
{
SoundManager.Ins().RemoveAll();
UpdateUI_Schedule.Ins().Remove(this);
_instance = null;
}
