private async Task WriteToOPOSLineDisplay(string oposText1, string oposText2)
{
if (oposText1 != null || oposText2 != null)
{
try
{
using (var lineDisplay = new OPOSLineDisplay(CacheBusinessLogic.CustomerDisplayName))
{
lineDisplay.Clear();
lineDisplay.DisplayTextAt(0, 0, oposText1);
await Task.Delay(50);
lineDisplay.DisplayTextAt(1, 0, oposText2);
}
}
catch (LineDisplayException ex)
{
Log.Warn(ex);
if (DisplayCustomerDisplayMessage)
{
DisplayCustomerDisplayMessage = false;
ShowNotification(ApplicationConstants.NoCustomerDisplayFound, null, null, ApplicationConstants.ButtonWarningColor);
}
}
catch (Exception ex)
{
Log.Info(Message, ex);
if (DisplayCustomerDisplayMessage)
{
DisplayCustomerDisplayMessage = false;
ShowNotification(ApplicationConstants.SomethingBadHappned, null, null, ApplicationConstants.ButtonWarningColor);
}
}
}
}
/// <summary>
/// Establishes a connection to the specified line display.
/// </summary>
/// <param name="peripheralName">Name of scale device to open.</param>
/// <param name="characterSet">The character set.</param>
/// <param name="binaryConversion">If set to <c>true</c> [binary conversion].</param>
/// <param name="peripheralConfig">Configuration parameters of the peripheral.</param>
public void Open(string peripheralName, int characterSet, bool binaryConversion, PeripheralConfiguration peripheralConfig)
{
this.oposLineDisplayWorker = new WorkerThread <IOPOSLineDisplay>(() =>
{
IOPOSLineDisplay oposLineDisplay = new OPOSLineDisplay();
// Open
oposLineDisplay.Open(peripheralName);
OposHelper.CheckResultCode(this, oposLineDisplay.ResultCode);
// Claim
oposLineDisplay.ClaimDevice(OposHelper.ClaimTimeOut);
OposHelper.CheckResultCode(this, oposLineDisplay.ResultCode);
// Enable/Configure
oposLineDisplay.DeviceEnabled = true;
binaryConversionEnabled = binaryConversion;
if (characterSet != 0)
{
// If character set is not supported by device, then disable and error out.
if (!oposLineDisplay.CharacterSetList.Split(CharacterSetListSeparator).Any(p => p.Equals(characterSet.ToString(CultureInfo.InvariantCulture), StringComparison.OrdinalIgnoreCase)))
{
oposLineDisplay.ReleaseDevice();
oposLineDisplay.Close();
throw new PeripheralException(PeripheralException.LineDisplayCharacterSetNotSupported);
}
oposLineDisplay.CharacterSet = characterSet;
}
this.numberOfColumns = oposLineDisplay.Columns;
return(oposLineDisplay);
});
}
private void btnLineDisplay_Click(object sender, EventArgs e)
{
OPOSLineDisplay ld = new OPOSLineDisplay();
int nRC = ld.Open("DefaultPOSLineDisplay");
if (nRC == (int)OPOS_Constants.OPOS_SUCCESS)
{
nRC = ld.ClaimDevice(5000);
if (nRC == (int)OPOS_Constants.OPOS_SUCCESS)
{
ld.DeviceEnabled = true;
ld.DisplayTextAt(0, 0, "WELCOME To W-MALL",
(int)POS.Devices.OPOSLineDisplayConstants.DISP_DT_NORMAL);
ld.DisplayTextAt(1, 0, "TOTAL" + "30,000".PadLeft(26 - "TOTAL".Length - 6, ' '),
(int)POS.Devices.OPOSLineDisplayConstants.DISP_DT_NORMAL);
ld.DeviceEnabled = false;
ld.ReleaseDevice();
ld.Close();
}
}
}
protected Task <bool> VerifyPeripheralsConnected()
{
Action printerError = default(Action);
Action cashDrawerError = default(Action);
Action lineDisplayError = default(Action);
printerError = new Action(async() =>
{
if (CacheBusinessLogic.UseReceiptPrinter && CacheBusinessLogic.UseOposReceiptPrinter)
{
if (OposPrinter == null)
{
ClaimOposPrinter();
}
if (OposPrinter != null && OposPrinter.IsAvailable())
{
cashDrawerError();
}
else
{
ShowNotification(ApplicationConstants.NoPrinterFound, cashDrawerError, cashDrawerError, ApplicationConstants.ButtonWarningColor);
}
}
else
{
ClaimOposPrinter();
cashDrawerError();
}
});
cashDrawerError = new Action(async() =>
{
if (CacheBusinessLogic.UseCashDrawer && CacheBusinessLogic.UseOposCashDrawer)
{
try
{
using (var cashDrawer = new OPOSCashDrawer(CacheBusinessLogic.CashDrawerName))
{
}
lineDisplayError();
}
catch (CashDrawerException ex)
{
ShowNotification(ApplicationConstants.NoCashDrawerFound, lineDisplayError, lineDisplayError
, ApplicationConstants.ButtonWarningColor);
}
}
else
{
lineDisplayError();
}
});
lineDisplayError = new Action(async() =>
{
if (CacheBusinessLogic.UseCustomerDisplay && CacheBusinessLogic.UseOposCustomerDisplay)
{
try
{
using (var lineDisplay = new OPOSLineDisplay(CacheBusinessLogic.CustomerDisplayName))
{
}
}
catch (LineDisplayException ex)
{
Log.Warn(ex);
DisplayCustomerDisplayMessage = false;
ShowNotification(ApplicationConstants.NoCustomerDisplayFound, null, null, ApplicationConstants.ButtonWarningColor);
}
catch (Exception ex)
{
Log.Info(Message, ex);
DisplayCustomerDisplayMessage = false;
ShowNotification(ApplicationConstants.SomethingBadHappned, null, null, ApplicationConstants.ButtonWarningColor);
}
}
});
printerError();
return(Task.FromResult <bool>(true));
}
public POSLineDisplay()
{
m_device = new OPOSLineDisplay();
}
