void Handle_Clicked(object sender, System.EventArgs e)
{
IConnection connection = null;
try
{
connection = App.myPrinter.Connection;
connection.Open();
if (!CheckPrinterLanguage(connection))
{
//ResetPage();
return;
}
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(connection);
IPrinterStatus status = printer.CurrentStatus;
ShowStatus(status);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("Exception:" + ex.Message);
ShowErrorAlert(ex.Message);
}
finally
{
if ((connection != null) && (connection.IsConnected))
{
connection.Close();
}
}
}
private void GetPrinterStatus()
{
//CheckPrinter();
IConnection connection = null;
try
{
connection = myPrinter.Connection;
connection.Open();
if (!CheckPrinterLanguage(connection))
{
resetPage();
return;
}
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(connection);
IPrinterStatus status = printer.CurrentStatus;
ShowStatus(status);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine("Exception:" + e.Message);
ShowErrorAlert(e.Message);
}
finally
{
if ((connection != null) && (connection.IsConnected))
{
connection.Close();
}
resetPage();
}
}
private bool CheckPrinterStatus(IConnection conn)
{
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(PrinterLanguage.ZPL, conn);
IPrinterStatus status = printer.CurrentStatus;
if (!status.IsReadyToPrint)
{
Debug.WriteLine("Printer in Error: " + status.ToString());
}
return(true);
}
protected void PrePrintCheckStatus()
{
// Check the printer status
IPrinterStatus status = _prn.CurrentStatus;
if (!status.IsReadyToPrint)
{
Debug.WriteLine("Unable to print. Printer is " + status.Status);
throw new ZebraExceptions(ZebraExceptions.MsgUnableToPrint + " " + status.Status, ZebraExceptions.ErrUnableToPrint);
}
}
private bool CheckPrinterStatus(IConnection connection)
{
IZebraPrinter printer = ZebraPrinterFactory.Current.GetInstance(PrinterLanguage.ZPL, connection);
IPrinterStatus status = printer.CurrentStatus;
if (!status.IsReadyToPrint)
{
Log.Information("Printer in Error: " + status);
}
return(true);
}
protected bool PreCheckPrinterStatus(IZebraPrinter printer)
{
// Check the printer status
IPrinterStatus status = printer.CurrentStatus;
if (!status.IsReadyToPrint)
{
ShowErrorAlert("Unable to print. Printer is " + status.Status);
return(false);
}
return(true);
}
public bool PreCheckPrinterStatus(IZebraPrinter printer)
{
// Check the printer status
IPrinterStatus status = printer.CurrentStatus;
if (!status.IsReadyToPrint)
{
Application.Current.MainPage.DisplayAlert("Unable to print. Printer is " + status.Status, "test", "test");
return(false);
}
return(true);
}
private void ShowStatus(IPrinterStatus status) {
Device.BeginInvokeOnMainThread(() => {
if (status.IsReadyToPrint) {
printerStatusLbl.Text = "Printer Status: Printer Ready";
printerStatusLbl.TextColor = Color.Green;
causesLbl.Text = "";
} else {
printerStatusLbl.Text = "Printer Status: Printer Error";
printerStatusLbl.TextColor = Color.Red;
causesLbl.Text = status.Status;
}
});
}
private void ShowStatus(IPrinterStatus status)
{
Device.BeginInvokeOnMainThread(() => {
if (status.IsReadyToPrint)
{
// checkStatus.Text = "Printer Status: Printer Ready";
//checkStatus.TextColor = Color.Green;
}
else
{
//checkStatus.Text = "Printer Status: Printer Error";
// checkStatus.TextColor = Color.Red;
}
});
}
//Check what happens to the printer after print command was sent
protected void PostPrintCheckStatus()
{
// Check the status again to verify print happened successfully
IPrinterStatus status = _prn.CurrentStatus;
// Wait while the printer is printing
while ((status.NumberOfFormatsInReceiveBuffer > 0) && (status.IsReadyToPrint))
{
status = _prn.CurrentStatus;
}
// verify the print didn't have errors like running out of paper
if (!status.IsReadyToPrint)
{
Debug.WriteLine("Error durring print. Printer is " + status.Status);
throw new ZebraExceptions(ZebraExceptions.MsgDuringPrint + " " + status.Status, ZebraExceptions.ErrDuringPrint);
}
}
public void GetDeviceStatusAction(Communication.Result result, IPrinterStatus printerStatus)
{
if (result == Communication.Result.Success)
{
this.listViewItemCollection.Add(new ListViewItem("Online", printerStatus.Offline, new string[] {"Offline", "Online"}, new Color[] {Color.Red, Color.Blue}));
this.listViewItemCollection.Add(new ListViewItem("Cover", printerStatus.CoverOpen, new string[] {"Open", "Closed"}, new Color[] {Color.Red, Color.Blue}));
if (printerStatus.ReceiptPaperEmpty)
{
this.listViewItemCollection.Add(new ListViewItem("Paper", "Empty", Color.Red));
}
else if (printerStatus.ReceiptPaperNearEmptyInner ||
printerStatus.ReceiptPaperNearEmptyOuter)
{
this.listViewItemCollection.Add(new ListViewItem("Paper", "Near Empty", Color.Orange));
}
else
{
this.listViewItemCollection.Add(new ListViewItem("Paper", "Ready", Color.Blue));
}
if (Configuration.CashDrawerOpenActiveHigh)
{
this.listViewItemCollection.Add(new ListViewItem("Cash Drawer", printerStatus.CompulsionSwitch, new string[] {"Open", "Closed"}, new Color[] {Color.Red, Color.Blue}));
}
else
{
this.listViewItemCollection.Add(new ListViewItem("Cash Drawer", ! printerStatus.CompulsionSwitch, new string[] {"Open", "Closed"}, new Color[] {Color.Red, Color.Blue}));
}
this.listViewItemCollection.Add(new ListViewItem("Head Temperature", printerStatus.OverTemp, new string[] {"High", "Normal"}, new Color[] {Color.Red, Color.Blue}));
this.listViewItemCollection.Add(new ListViewItem("Non Recoverable Error", printerStatus.UnrecoverableError, new string[] {"Occurs", "Ready"}, new Color[] {Color.Red, Color.Blue}));
this.listViewItemCollection.Add(new ListViewItem("Paper Cutter", printerStatus.CutterError, new string[] {"Error", "Ready"}, new Color[] {Color.Red, Color.Blue}));
this.listViewItemCollection.Add(new ListViewItem("Head Thermistor", printerStatus.HeadThermistorError, new string[] {"Error", "Normal"}, new Color[] {Color.Red, Color.Blue}));
this.listViewItemCollection.Add(new ListViewItem("Voltage", printerStatus.VoltageError, new string[] {"Error", "Normal"}, new Color[] {Color.Red, Color.Blue}));
}
else
{
Device.BeginInvokeOnMainThread(() =>
{
DisplayAlert(result.ToString(), null, "OK");
});
}
this.contentPageComponent.UserInteractionEnabled = true;
}
protected bool PostPrintCheckStatus(IZebraPrinter printer)
{
// Check the status again to verify print happened successfully
IPrinterStatus status = printer.CurrentStatus;
// Wait while the printer is printing
while ((status.NumberOfFormatsInReceiveBuffer > 0) && (status.IsReadyToPrint))
{
status = printer.CurrentStatus;
}
// verify the print didn't have errors like running out of paper
if (!status.IsReadyToPrint)
{
ShowErrorAlert("Error durring print. Printer is " + status.Status);
return(false);
}
return(true);
}
public static void GetDeviceStatus(string portName, string portSettings, int timeout, Action <Result, IPrinterStatus> action)
{
Task task = new Task(() =>
{
Result result = Result.UnknownError;
IPort port = null;
IPrinterStatus printerStatus = null;
try
{
result = Result.GetPortError;
port = Port.GetPort(portName, portSettings, timeout);
result = Result.GetParsedStatusError;
printerStatus = port.GetParsedStatus();
result = Result.Success;
}
catch (Exception exception)
{
DebugExt.WriteLine(exception.Message);
}
finally
{
if (port != null)
{
Port.ReleasePort(port);
port = null;
}
}
Device.BeginInvokeOnMainThread(() => {
action(result, printerStatus);
});
});
task.Start();
}
