public bool SendToScreen() { foreach (int CardNum in Leds.Keys) { if (Programs.ContainsKey(CardNum) && Leds.ContainsKey(CardNum) && Leds[CardNum] == "OPEN") { if (!EQ2008.User_SendToScreen(CardNum)) { throw new Exception("EQ2008Collection.SendToScreen失败,发送节目到LED出现错误!"); } } } return(true); }