private void RefreshPortNames()
{
// get two lists, and if not the same, replace one
var physicalNames = SerialPort.GetPortNames();
var localNames = PortNames.ToArray(); // local copy to prevent locking/size changing issues
var matches = physicalNames.Length == localNames.Length;
if (matches)
{
// same length, check contents
foreach (var name in physicalNames)
{
matches &= localNames.Contains(name);
}
foreach (var name in localNames)
{
matches &= physicalNames.Contains(name);
}
}
if (!matches)
{
var msg = Messager;
if (msg != null)
{
msg.AddMessage("COM Ports changed");
}
// replace internals
var curSelected = SelectedPortName;
// copy in new ones
PortNames.Clear();
foreach (var name in physicalNames)
{
PortNames.Add(name);
}
var oldNameOk = !String.IsNullOrEmpty(curSelected) && PortNames.Contains(curSelected);
if (oldNameOk)
{
SelectedPortName = curSelected;
}
else if (PortNames.Any())
{
SelectedPortName = PortNames[0];
}
else
{
SelectedPortName = "";
}
// todo - disconnect when pulled? handle crashes?
}
}
public ComPortViewModels()
{
if (!PortNames.Any())
{
throw new ArgumentException("Нет ни одного COM порта");
}
_serialPort = new SerialPort {
Parity = Parity.None, DataBits = 8, StopBits = StopBits.One
};
PortName = PortNames.Last();
PortSpeed = 9600;
_serialPort.DataReceived += SerialPortOnDataReceived;
}