1  public bool WaitData()
 2  {
 3    bool states = false;
 4    try
 5    {
 6      DateTime Get_Time = DateTime.Now;
 7      while (!DeviceStates)
 8      {
 9          Thread.Sleep(10);
10          if (DeviceStates == true)
11          {
12              states = true;
13              return states;
14          }
15 
16          TimeSpan P_TimeSpan = DateTime.Now - Get_Time;
17          if (P_TimeSpan.Seconds >= 1)
18          {
19              states = false;
20              return states;
21          }
22      }
23      return states;
24      }
25      catch (Exception ex)
26      {
29        return states;
30      }
　　　　　　
  }