private async void SendFileButton_Clicked(object sender, EventArgs eventArgs)
{
SetInputEnabled(false);
string filePath = null;
Connection connection = null;
try {
await Task.Factory.StartNew(() => {
connection = CreateConnection();
connection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(connection);
filePath = CreateDemoFile(printer.PrinterControlLanguage);
printer.SendFileContents(filePath);
});
} catch (Exception e) {
await DisplayAlert("Error", e.Message, "OK");
} finally {
try {
connection?.Close();
} catch (ConnectionException) { }
if (filePath != null)
{
try {
new FileInfo(filePath).Delete();
} catch (Exception) { }
}
SetInputEnabled(true);
}
}
//发送文件
public static bool SendFile(string filePath)
{
if (printer != null && filePath != "")
{
printer.SendFileContents(filePath);
return(true);
}
return(false);
}
private void SendFileToPrinter()
{
string filePath = null;
Connection printerConnection = null;
Task.Run(() => {
try {
printerConnection = connectionSelector.GetConnection();
printerConnection.Open();
ZebraPrinter printer = ZebraPrinterFactory.GetInstance(printerConnection);
filePath = CreateDemoFile(printer.PrinterControlLanguage);
printer.SendFileContents(filePath);
} catch (ConnectionException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (IOException e) {
MessageBoxCreator.ShowError(e.Message, "IO Error");
} catch (ZebraPrinterLanguageUnknownException e) {
MessageBoxCreator.ShowError(e.Message, "Connection Error");
} catch (Exception e) {
MessageBoxCreator.ShowError(e.Message, "Send File Error");
} finally {
try {
if (printerConnection != null)
{
printerConnection.Close();
}
} catch (ConnectionException) { }
if (filePath != null)
{
try {
new FileInfo(filePath).Delete();
} catch { }
}
SetSendFileButtonState(true);
}
});
}