public bool ConnectToDevice(out string result)
{
result = "";
if (Qa401 != null)
{
return(true);
}
if (IsAppAlreadyRunning() == false)
{
LaunchApplication();
}
try
{
TcpChannelInst = new TcpChannel();
ChannelServices.RegisterChannel(TcpChannelInst, false);
Type requiredType = typeof(QA401Interface);
Qa401 = (QA401Interface)Activator.GetObject(requiredType, "tcp://localhost:9401/QuantAsylumQA401Server");
return(true);
}
catch (Exception ex)
{
result = ex.Message;
Log.WriteLine(LogType.Error, "Exception in ConnectToDevice() " + ex.Message);
}
return(false);
}
public Form1()
{
InitializeComponent();
// Try to connect to QA400 Application. Note the code below is boilerplate, likely needed by any app that wants to connect
// to the QA400 application. This is routine dotnet remoting code.
try
{
TcpChannel tcpChannel = new TcpChannel();
ChannelServices.RegisterChannel(tcpChannel, false);
Type requiredType = typeof(QA401Interface);
AudioAnalyzer = (QA401Interface)Activator.GetObject(requiredType, "tcp://localhost:9401/QuantAsylumQA401Server");
LogData("QA401 Setup OK");
}
catch
{
// If the above fails for any reason, make sure the rest of the app can tell. We do that here by setting AudioAnalyzer to null.
AudioAnalyzer = null;
LogData("QA401 Setup failed");
}
}
// Get Name button. Retrieves the name of the equipment. Also an easy check if the remoting is working and able to talk to the host app. As we expect
// this will be the first function called after a remoting setup, it's protected by try/catch. The subsequent calls will only check if AudioAnalyzer is
// null. In other user code, after the setup code succeeds, use a call to GetName() to ensure the connection is working.
private void button1_Click(object sender, EventArgs e)
{
if (AudioAnalyzer == null)
{
return;
}
try
{
Stopwatch sw = Stopwatch.StartNew();
string name = AudioAnalyzer.GetName();
sw.Stop();
LogData(string.Format("{0} [0:0.0 mS]", name, sw.Elapsed.TotalMilliseconds));
}
catch (Exception ex)
{
// If we end up here, then it means the connection to the analyzer failed.
LogData(ex.Message);
AudioAnalyzer = null;
}
}
