/// <summary>
/// Restarts NPrinting's web engine service asynchronously while raising status
/// updates for event.
/// </summary>
/// <returns>True if successful, and false if not.</returns>
public async Task <bool> RestartWebEngineServiceAsync()
{
var service = new ServiceController("Qlik NPrinting Web Engine");
TimeSpan timeout = TimeSpan.FromMinutes(1);
var args = new ServiceStatusChangedEventArgs();
try
{
return(await Task.Run(() =>
{
if (service.Status != ServiceControllerStatus.Stopped)
{
service.Stop();
args.Status = "Stopping NPrinting web engine service...";
OnServiceStatusChanged(args);
service.WaitForStatus(ServiceControllerStatus.Stopped, timeout);
}
service.Start();
args.Status = "Starting NPrinting web engine service...";
OnServiceStatusChanged(args);
service.WaitForStatus(ServiceControllerStatus.Running, timeout);
args.Status = "Finished restarting service.";
OnServiceStatusChanged(args);
return true;
}));
}
catch (InvalidOperationException)
{
args.Status = "Failed to restart service.";
args.ErrorMessage = "The service was not found on this computer.";
OnServiceStatusChanged(args);
}
catch (TimeoutException)
{
args.Status = "Failed to restart service.";
args.ErrorMessage = "The service timed out.";
OnServiceStatusChanged(args);
}
return(false);
}
/// <summary>
/// Event to raise for status changes when restarting service.
/// </summary>
/// <param name="e">Status details to pass with event-</param>
protected virtual void OnServiceStatusChanged(ServiceStatusChangedEventArgs e)
{
EventHandler <ServiceStatusChangedEventArgs> handler = ServiceStatusChanged;
handler?.Invoke(this, e);
}
