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);
 }