private async void PrintButton_Clicked(object sender, EventArgs eventArgs)
{
SetInputEnabled(false);
Connection connection = null;
try {
await Task.Factory.StartNew(() => {
connection = CreateConnection();
connection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(connection);
if (printer.PrinterControlLanguage == PrinterLanguage.LINE_PRINT)
{
throw new ConnectionException("Operation cannot be performed with a printer set to line print mode");
}
string signaturePath = Path.Combine(LocalApplicationDataFolderPath, "signature.jpeg");
double printWidth = double.Parse(SGD.GET("ezpl.print_width", connection));
if (File.Exists(signaturePath))
{
File.Delete(signaturePath);
}
using (Stream stream = SignaturePad.GetImageStream(printWidth)) {
using (BinaryReader br = new BinaryReader(stream)) {
br.BaseStream.Position = 0;
byte[] signatureBytes = br.ReadBytes((int)stream.Length);
File.WriteAllBytes(signaturePath, signatureBytes);
}
}
ZebraImageI image = ZebraImageFactory.Current.GetImage(signaturePath);
printer.PrintImage(image, 0, 0, image.Width, image.Height, false);
});
} catch (Exception e) {
await DisplayAlert("Error", e.Message, "OK");
} finally {
try {
connection?.Close();
} catch (ConnectionException) { }
SetInputEnabled(true);
}
}
private void PrintButton_Click(object sender, RoutedEventArgs evt)
{
SetPrintButtonState(false);
Connection printerConnection = null;
Task.Run(() => {
try {
printerConnection = connectionSelector.GetConnection();
printerConnection.Open();
ZebraImageI image = ZebraImageFactory.GetImage(fileSelector.FileName);
if (viewModel.ShouldStoreImage)
{
ZebraPrinterFactory.GetInstance(printerConnection).StoreImage(viewModel.StoredFileName, image, 540, 412);
}
ZebraPrinterFactory.GetInstance(printerConnection).PrintImage(image, 0, 0, 550, 412, false);
} catch (ConnectionException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (ZebraPrinterLanguageUnknownException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (IOException e) {
MessageBoxCreator.ShowError(e.Message, "Image Error");
} catch (ZebraIllegalArgumentException e) {
MessageBoxCreator.ShowError(e.Message, "Illegal Arguments");
} catch (ArgumentException e) {
MessageBoxCreator.ShowError(e.Message, "Invalid File Path");
} finally {
try {
if (printerConnection != null)
{
printerConnection.Close();
}
} catch (ConnectionException) {
} finally {
SetPrintButtonState(true);
}
}
});
}
