How do I check to see which ports are open Using.System.IO.Ports

• 2009年2月25日 6:09

   

   
  

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       Hi, I'm using System.IO.Ports to connect to various communication devices (one at a time of course)
  
  and well whenever I connected my PICDEM 2+ board to hyper terminal I'm making for it, the app is saying it can't open COM 1.
  
  Well of course, it's not connected to COM 1, and it usually various between COM 3 - COM 7.
  
  However, I'm not sure which it usually connect to, so I would like to run a small algorithm as the app is loading, and see which ports are open, and are connected.
  
  I tried something along the lines of
  
  SerialPort SP = new SerialPort("COM 1")
  
  if(SP.IsOpen()) break;
  
  else
  
  SP = new SerialPort("COM 2");
  
  if(SP.IsOpen()) break;
  
  else...
  
  etc.. up to COM 7
  
  but it didn't work.
  
  
  What would be a more clever way doing this?
  
  I have also tried
  
  SP.GetPortNames();
  
  but I get a null array in return
  
  so I'm not sure what specific function it is that I need to call to get this going correctly.
  
  Thanks in advance for suggestions, and comments,
  
  thanks,
  
  C
  
  
  

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  csfinch
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