Nothing happens with UWP

[Letippi]

Hi, I have tried with both versions 1.6.0 and 2.0 but nothing happens on UWP. The same code with Android, IOS and MacOS works perfectly.

With version 1.6.0 the code is: ep = new EPSON(); String ip = "192.168.0.188"; int networkPort = 9100; printer = new NetworkPrinter(ipAddress: ip, port: networkPort, reconnectOnTimeout: false ); printer.Write(ep.PrintLine("HELLO WORLD"));

With version 2.0 the code is: ep = new EPSON(); String ip = "192.168.0.188"; String networkPort = "9100"; string ip_port = $"{ip}:{networkPort}"; NetworkPrinterSettings network_parameters = new NetworkPrinterSettings() { ConnectionString = ip_port }; printer = new NetworkPrinter(settings: network_parameters); printer.Write(ep.PrintLine("HELLO WORLD"));

Anyone help?

Thankyou

[lukevp]

Does UWP need permissions at the application level to make an outbound network connection? @Letippi

[jupagose]

UWP reports Acces deniied to COM port, I use same base code to print in maui app and it prints ok. I added point of service, Low level and Low level devices but it does not works.

[jupagose]

After many tryies Finally I take totally new one UWP project and tryed opening an standard serialport an print a line

` private SerialPort _serialPort { get; set; } private void Page_Loaded(object sender, RoutedEventArgs e) { _serialPort = new SerialPort("COM3"); _serialPort.Open(); }

    private void Button_Click(object sender, RoutedEventArgs e)
    {
        _serialPort.WriteLine("Hola mundo puerto com3");
    }
}

`

Ths code works fine but If I install ESCPOS_NET 3.0.0 nugget package the problem starts "Acces denied to port com" Downgrading to 2.0 packagew everything works fine.