private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            var messages = e.Result as List <Model.Message>;

            if (messages.Any())
            {
                foreach (var m in messages)
                {
                    _chat.Messages.Add(m);
                }

                for (int i = 0; i < messages.Count; i++)
                {
                    messages[i].Text += "fromBG";
                }

                UpdateAllMessages(messages);
            }

            if (KeepUpdating)
            {
                MessageUpdateBGW.RunWorkerAsync();
            }
        }
        public MessengerForm(Chat chat)
        {
            InitializeComponent();
            _chat = chat;

            // Устанавливаем имя чата
            Text = _chat.Private
                                ? chat.Name.Split('-').First(x => x != Properties.Settings.Default.CurrentUser.Nickname)
                                : _chat.Name;

            // Обновляем сообщения
            _chat.Messages.Clear();
            var messages = ServiceClient.GetMessages(chat.ID, 0, 5).ToList();

            UpdateAllMessages(messages);
            _chat.Messages = messages;
            //ScrollToBottom(MessagesPanel);

            // Ставим плейсхолдер в поле сообщения
            ActiveControl = MessagesPanel;
            MessageTextBox_Leave(new Object(), EventArgs.Empty);

            MessageUpdateBGW.RunWorkerAsync();
        }