Inheritance: IdentifiedEntity
        private async void EditAdditionalServiceForm_Load(object sender, EventArgs e)
        {
            if (additionalServiceId != Guid.Empty)
            {
                Enabled = false;

                using (Channel<IServerTcpService> channel = ChannelManager.CreateChannel())
                {
                    try
                    {
                        AdditionalService = await taskPool.AddTask(channel.Service.GetAdditionalService(additionalServiceId));

                        Enabled = true;
                    }
                    catch (OperationCanceledException) { }
                    catch (CommunicationObjectAbortedException) { }
                    catch (ObjectDisposedException) { }
                    catch (InvalidOperationException) { }
                    catch (FaultException exception)
                    {
                        UIHelper.Warning(exception.Reason.ToString());
                    }
                    catch (Exception exception)
                    {
                        UIHelper.Warning(exception.Message);
                    }
                }
            }
            else
            {
                AdditionalService = new AdditionalService()
                {
                    Name = "Новая дополнительная услуга"
                };
            }
        }
        private async void saveButton_Click(object sender, EventArgs e)
        {
            using (Channel<IServerTcpService> channel = ChannelManager.CreateChannel())
            {
                try
                {
                    saveButton.Enabled = false;

                    AdditionalService = await taskPool.AddTask(channel.Service.EditAdditionalService(additionalService));

                    if (Saved != null)
                    {
                        Saved(this, EventArgs.Empty);
                    }
                }
                catch (OperationCanceledException) { }
                catch (CommunicationObjectAbortedException) { }
                catch (ObjectDisposedException) { }
                catch (InvalidOperationException) { }
                catch (FaultException exception)
                {
                    UIHelper.Warning(exception.Reason.ToString());
                }
                catch (Exception exception)
                {
                    UIHelper.Warning(exception.Message);
                }
                finally
                {
                    saveButton.Enabled = true;
                }
            }
        }