private void PerformListFiles(bool isFormat)
{
Connection printerConnection = null;
try {
Application.Current.Dispatcher.Invoke(() => {
printerConnection = connectionSelector.GetConnection();
});
printerConnection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(printerConnection);
string[] formatExtensions;
if (printer.PrinterControlLanguage == PrinterLanguage.ZPL)
{
formatExtensions = new string[] { "ZPL" };
}
else
{
formatExtensions = new string[] { "FMT", "LBL" };
}
string[] formats = isFormat ? printer.RetrieveFileNames(formatExtensions) : printer.RetrieveFileNames();
Application.Current.Dispatcher.Invoke(() => {
foreach (string format in formats)
{
viewModel.FormatsList.Add(format);
}
});
} catch (ConnectionException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (ZebraIllegalArgumentException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (ZebraPrinterLanguageUnknownException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} finally {
if (printerConnection != null)
{
printerConnection.Close();
}
}
}
private void PopulateListWithFormats()
{
Connection printerConnection = null;
Task.Run(() => {
try {
ClearFormatList();
printerConnection = connectionSelector.GetConnection();
printerConnection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(printerConnection);
string[] formatExtensions = printer.PrinterControlLanguage == PrinterLanguage.ZPL ? new String[] { "ZPL" } : new String[] { "FMT", "LBL" };
string[] formats = printer.RetrieveFileNames(formatExtensions);
AddFormatsToList(formats);
} catch (ConnectionException e) {
MessageBoxCreator.ShowError(e.Message, "Communication Error");
} catch (ZebraPrinterLanguageUnknownException e) {
MessageBoxCreator.ShowError(e.Message, "Communication Error");
} catch (ZebraIllegalArgumentException e) {
MessageBoxCreator.ShowError(e.Message, "Communication Error");
} finally {
try {
if (printerConnection != null)
{
printerConnection.Close();
}
} catch (ConnectionException) {
} finally {
SetButtonState(retrieveFormatsButton, true);
SetFormatListState(true);
}
}
});
}
private async Task AddPrinterFormatsToFormatListAsync()
{
Connection connection = null;
try {
List <FormatViewModel> formats = new List <FormatViewModel>();
await Task.Factory.StartNew(() => {
connection = ConnectionCreator.Create(ViewModel.SelectedPrinter);
connection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(connection);
ZebraPrinterLinkOs linkOsPrinter = ZebraPrinterFactory.CreateLinkOsPrinter(printer);
string[] formatPrinterPaths = printer.RetrieveFileNames(new string[] { "ZPL" });
foreach (string formatPrinterPath in formatPrinterPaths)
{
int colonIndex = formatPrinterPath.IndexOf(":");
string driveLetter = formatPrinterPath.Substring(0, colonIndex);
string name = formatPrinterPath.Substring(colonIndex + 1, formatPrinterPath.LastIndexOf(".") - colonIndex - 1);
string extension = formatPrinterPath.Substring(formatPrinterPath.LastIndexOf(".") + 1);
if (!string.Equals(driveLetter, "Z", StringComparison.OrdinalIgnoreCase)) // Ignore all formats stored on printer's Z drive
{
formats.Add(new FormatViewModel {
DriveLetter = driveLetter,
Name = name,
Extension = extension,
Content = null, // Populate this later, upon navigating to print format page
Source = FormatSource.Printer,
OnSaveButtonClicked = new Command(async(object parameter) => {
if (!ViewModel.IsSavingFormat && !ViewModel.IsDeletingFormat && !ViewModel.IsStoredFormatListRefreshing)
{
FormatViewModel format = parameter as FormatViewModel;
await Task.Factory.StartNew(() => {
ViewModel.IsSavingFormat = true;
format.IsSaving = true;
});
await SavePrinterFormatAsync(format);
await Task.Factory.StartNew(() => {
format.IsSaving = false;
ViewModel.IsSavingFormat = false;
});
await RefreshStoredFormatListAsync();
}
}),
OnPrintButtonClicked = new Command(async(object parameter) => {
if (!ViewModel.IsSavingFormat)
{
FormatViewModel format = parameter as FormatViewModel;
await PushPageAsync(new PrintFormatPage(ViewModel.SelectedPrinter, format));
}
})
});
}
}
formats.ForEach(ViewModel.PrinterFormatList.Add);
});
} catch (Exception e) {
await AlertCreator.ShowErrorAsync(this, e.Message);
} finally {
await Task.Factory.StartNew(() => {
try {
connection?.Close();
} catch (ConnectionException) { }
});
}
}