public void StartPrinting()
{
if (printingLoop != null && !printingLoop.IsCompleted)
{
return;
}
printingLoop = Task.Factory.StartNew(() => {
while (true)
{
var pj = _repository.GetCurrentPrintingJob();
if (pj == null)
{
return;
}
else
{
TimeSpan jobDuration = TimeSpan.Zero;
try { jobDuration = XmlConvert.ToTimeSpan(pj.Duration); } catch { return; }
if (jobDuration == TimeSpan.Zero)
{
return;
}
else
{
try
{
Task.Delay(jobDuration, printingJobCTS.Token).Wait();
_repository.RemovePrintedJob();
_hub.Clients.All.SendAsync("printjobcompleted", string.Format("Name: {0}, Duration: {1}", pj.Name, jobDuration.ToString()));
}
catch (Exception ex)
{
if (ex.Message.Contains("A task was canceled"))
{
printingJobCTS = new CancellationTokenSource();
}
}
}
}
}
});
}