private void CreateChooseContactWindow(object sender, EventArgs eventArgs)
        {
            var nameContact = _newContactWindow.GetName();

            var contacts = _connection.AddContact(nameContact);

            if (contacts.Count == 0)
            {
                _newContactWindow.ShowMessage("Таких контактов не найдено");
                return;
            }

            _chooseContactWindow = _newContactWindow.CreateChooseContactWindow();

            var namesContactList  = new List <string>();
            var onlineContactList = new List <string>();

            foreach (var cont in contacts)
            {
                namesContactList.Add(cont.Name);

                if (cont.Online)
                {
                    onlineContactList.Add(cont.Name);
                }
            }

            _chooseContactWindow.UpdateContacts(namesContactList, onlineContactList);

            _chooseContactWindow.ChooseContact += AddNewContactFromWindow;
            _chooseContactWindow.ShowWindow();

            _newContactWindow.Close();
        }