public static void Hello(string port)
{
using (var emCardEncoder = new EMCardEncoder())
{
emCardEncoder.Open(port);
emCardEncoder.SendHello();
Thread.Sleep(50);
byte[] ack = emCardEncoder.ReadMessage();
if ((ack != null) && (ack.Length > 0))
{
System.Console.WriteLine(EMCardEncoder.FormatBytes(ack));
}
else if ((ack != null) && (ack.Length == 0))
{
System.Console.WriteLine("ACK");
}
}
}
private void comboBoxPortNames_SelectedIndexChanged(object sender, EventArgs e)
{
port = null;
if (emCardEncoder != null)
{
emCardEncoder.Close();
emCardEncoder.Dispose();
emCardEncoder = null;
}
string selectedPort = comboBoxPortNames.SelectedItem as string;
try
{
emCardEncoder = new EMCardEncoder();
emCardEncoder.Open(selectedPort);
emCardEncoder.SendHello();
Thread.Sleep(50);
byte[] ack = emCardEncoder.ReadMessage();
if ((ack != null) && (ack.Length == 0))
{
port = selectedPort;
}
else
{
port = null;
emCardEncoder.Close();
emCardEncoder.Dispose();
emCardEncoder = null;
}
}
catch (Exception)
{
}
TogglePortCorrect();
}
