BLE.Server.Droid.BleServer._bluettothServerCallback_NotificationSent C# (CSharp) Метод

        void _bluettothServerCallback_NotificationSent(object sender, BleEventArgs e)
        {
            if (_count == 0)
            {
                _sw = new Stopwatch();
                _sw.Start();
            }

            if (_count < 1000)
            {
                var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
                var random = new Random();
                var result = new string(
                    Enumerable.Repeat(chars, 20)
                        .Select(s => s[random.Next(s.Length)])
                        .ToArray());
                _characteristic.SetValue(result);

                _bluetoothServer.NotifyCharacteristicChanged(e.Device, _characteristic, false);

                _count++;

            }
            else
            {
                _sw.Stop();
                Console.WriteLine("Sent # {0} notifcations. Total kb:{2}. Time {3}(s). Throughput {1} bytes/s", _count,
                    _count * 20.0f / _sw.Elapsed.TotalSeconds, _count * 20 / 1000, _sw.Elapsed.TotalSeconds);
            }
        }