private async Task GetAllCharacteristics()

in BluetoothLEExplorer/BluetoothLEExplorer/Models/ObservableGattDeviceService.cs [423:475]
47 lines of code
9 McCabe index (conditional complexity)

        private async Task GetAllCharacteristics()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("ObservableGattDeviceService::getAllCharacteristics: ");
            sb.Append(name);

            try
            {
                // Request the necessary access permissions for the service and abort
                // if permissions are denied.
                GattOpenStatus status = await service.OpenAsync(GattSharingMode.SharedReadAndWrite);

                if (status != GattOpenStatus.Success && status != GattOpenStatus.AlreadyOpened)
                {
                    string error = " - Error: " + status.ToString();
                    Name += error;
                    sb.Append(error);
                    Debug.WriteLine(sb.ToString());
                    return;
                }

                var result = await service.GetCharacteristicsAsync(Services.SettingsServices.SettingsService.Instance.UseCaching ? BluetoothCacheMode.Cached : BluetoothCacheMode.Uncached);

                if (result.Status == GattCommunicationStatus.Success)
                {
                    sb.Append(" - getAllCharacteristics found ");
                    sb.Append(result.Characteristics.Count());
                    sb.Append(" characteristics");
                    Debug.WriteLine(sb);
                    foreach (GattCharacteristic gattchar in result.Characteristics)
                    {
                        ObservableGattCharacteristics temp = new ObservableGattCharacteristics(gattchar, this);
                        await temp.Initialize();
                        Characteristics.Add(temp);
                    }
                }
                else if (result.Status == GattCommunicationStatus.Unreachable)
                {
                    sb.Append(" - getAllCharacteristics failed with Unreachable");
                    Debug.WriteLine(sb.ToString());
                }
                else if (result.Status == GattCommunicationStatus.ProtocolError)
                {
                    sb.Append(" - getAllCharacteristics failed with Unreachable");
                    Debug.WriteLine(sb.ToString());
                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine("getAllCharacteristics: Exception - {0}" + ex.Message);
                Name += " - Exception: " + ex.Message;
            }
        }