public Task <bool> InitializePrinterAsync()
{
var t = new TaskCompletionSource <bool>();
PrinterCallback callback = new PrinterCallback();
callback.RunResult += (o, e) => t.TrySetResult(e && GetPrinterStatus() == PrinterStatus.Ready);
Printer.PrinterInit(callback);
return(t.Task);
}
public Task <bool> SendEscPosCommandsAsync(byte[] commands)
{
var t = new TaskCompletionSource <bool>();
PrinterCallback callback = new PrinterCallback();
callback.ReturnString += (o, e) => t.TrySetResult(e == "CACHE PRINTDATA DATA OK!");
Printer.SendUserCMDData(commands, callback);
return(t.Task);
}
public Task <bool> PerformPrintAsync()
{
PrinterStatus printerStatus = GetPrinterStatus();
if (printerStatus != PrinterStatus.Ready)
{
return(Task.FromResult(false));
}
var t = new TaskCompletionSource <bool>();
PrinterCallback cb = new PrinterCallback();
cb.ReturnString += (o, e) => t.TrySetResult(e == "UserCMDData is Paesed OK!");
Printer.PrinterPerformPrint(0, cb);
return(t.Task);
}