// By default, use all connections types.
public static async Task <PosPrinter> GetFirstReceiptPrinterAsync(PosConnectionTypes connectionTypes = PosConnectionTypes.All)
{
return(await DeviceHelpers.GetFirstDeviceAsync(PosPrinter.GetDeviceSelector(connectionTypes),
async (id) =>
{
PosPrinter printer = await PosPrinter.FromIdAsync(id);
if (printer != null && printer.Capabilities.Receipt.IsPrinterPresent)
{
return printer;
}
// Dispose the unwanted printer.
printer?.Dispose();
return null;
}));
}
public static async Task <BarcodeScanner> GetFirstBarcodeScannerAsync(PosConnectionTypes connectionTypes = PosConnectionTypes.All)
{
return(await DeviceHelpers.GetFirstDeviceAsync(BarcodeScanner.GetDeviceSelector(connectionTypes), async (id) => await BarcodeScanner.FromIdAsync(id)));
}
// By default, use all connections types.
public static async Task <CashDrawer> GetFirstCashDrawerAsync(PosConnectionTypes connectionTypes = PosConnectionTypes.All)
{
return(await DeviceHelpers.GetFirstDeviceAsync(CashDrawer.GetDeviceSelector(connectionTypes), async (id) => await CashDrawer.FromIdAsync(id)));
}
// By default, use all connections types.
public static async Task <MagneticStripeReader> GetFirstMagneticStripeReaderAsync(PosConnectionTypes connectionTypes = PosConnectionTypes.All)
{
return(await DeviceHelpers.GetFirstDeviceAsync(MagneticStripeReader.GetDeviceSelector(connectionTypes), async (id) => await MagneticStripeReader.FromIdAsync(id)));
}