async Task <bool> CreateDeviceList_OneTime(Type[] deviceClasses)
{
foreach (Type ty in deviceClasses)
{
DeviceInformationCollection deviceList = null;
if (ty == typeof(BarcodeScanner))
{
deviceList = await DeviceInformation.FindAllAsync(BarcodeScanner.GetDeviceSelector());
}
else if (ty == typeof(PosPrinter))
{
deviceList = await DeviceInformation.FindAllAsync(PosPrinter.GetDeviceSelector());
}
else if (ty == typeof(CashDrawer))
{
deviceList = await DeviceInformation.FindAllAsync(CashDrawer.GetDeviceSelector());
}
else if (ty == typeof(MagneticStripeReader))
{
deviceList = await DeviceInformation.FindAllAsync(MagneticStripeReader.GetDeviceSelector());
}
else if (ty == typeof(LineDisplay))
{
deviceList = await DeviceInformation.FindAllAsync(LineDisplay.GetDeviceSelector());
}
AddToSelectionList(ty, deviceList);
}
return(true);
}
private static string GetPosSelector(Type ty)
{
if (ty == typeof(BarcodeScanner))
{
return(BarcodeScanner.GetDeviceSelector());
}
if (ty == typeof(PosPrinter))
{
return(PosPrinter.GetDeviceSelector());
}
if (ty == typeof(CashDrawer))
{
return(CashDrawer.GetDeviceSelector());
}
if (ty == typeof(MagneticStripeReader))
{
return(MagneticStripeReader.GetDeviceSelector());
}
if (ty == typeof(LineDisplay))
{
return(LineDisplay.GetDeviceSelector());
}
return(null);
}
// 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)));
}