private void ButtonDeleteUser_Click(object sender, EventArgs e)
        {
            Log.Debug(TAG, "ButtonDeleteUser_Click");

            AppCompatButton buttonDeleteUser = sender as AppCompatButton;

            buttonDeleteUser.Enabled     = false;
            UserCardButtonOk.Enabled     = false;
            UserCardButtonOk.Text        = GetText(Resource.String.ok_mute_button_with_remove_user);
            UserName.Enabled             = false;
            UserEmail.Enabled            = false;
            UserPhone.Enabled            = false;
            UserAlarmSubscribing.Enabled = false;
            UserCommandsAllowed.Enabled  = false;
            UserCardSubHeader.Text       = GetText(Resource.String.delete_user_card_sub_title);
            UserCardHeader.Text          = GetText(Resource.String.delete_user_card_header);
            UserCardSubHeader.SetTextColor(Color.IndianRed);
            buttonDeleteUser.SetTextColor(Color.Gray);

            AppCompatTextView appCompatTextView = new AppCompatTextView(this)
            {
                Text = GetText(Resource.String.footer_text_with_remove_user), TextSize = 15
            };

            appCompatTextView.SetTextColor(Color.Red);
            appCompatTextView.SetWidth(3);
            UserFooterLayout.AddView(appCompatTextView);

            AppCompatButton buttonConfirmDeleteUser = new AppCompatButton(this)
            {
                Text = GetText(Resource.String.button_confirm_remove)
            };

            buttonConfirmDeleteUser.SetTextColor(Color.DarkRed);
            buttonConfirmDeleteUser.Click += new EventHandler((sender, eventArg) =>
            {
                lock (DatabaseContext.DbLocker)
                {
                    using (DatabaseContext db = new DatabaseContext(gs.DatabasePathBase))
                    {
                        UserModel user = db.Users.Find(userId);
                        db.Users.Remove(user);
                        db.SaveChanges();

                        StartActivity(typeof(UsersListActivity));
                    }
                }
            });
            buttonConfirmDeleteUser.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.WrapContent);
            UserFooterLayout.AddView(buttonConfirmDeleteUser);
        }
        protected override void OnCreate(Bundle savedInstanceState)
        {
            Log.Debug(TAG, "OnCreate");

            base.OnCreate(savedInstanceState);
            UserFooterLayout = FindViewById <LinearLayout>(Resource.Id.user_footer_layout);
            int user_id = Intent.Extras.GetInt(nameof(UserModel.Id), 0);

            if (user_id < 1)
            {
                string err_title = GetText(Resource.String.err_title_2);
                UserName.Text    = err_title;
                UserName.Enabled = false;

                UserEmail.Text    = err_title;
                UserEmail.Enabled = false;

                UserPhone.Text    = err_title;
                UserPhone.Enabled = false;

                UserAlarmSubscribing.Enabled = false;
                UserCommandsAllowed.Enabled  = false;

                UserCardSubHeader.Text    = err_title;
                UserCardSubHeader.Enabled = false;

                UserCardButtonOk.Enabled = false;
                return;
            }

            UserModel user = null;

            lock (DatabaseContext.DbLocker)
            {
                using (DatabaseContext db = new DatabaseContext(gs.DatabasePathBase))
                {
                    user = db.Users.Find(user_id);
                }
            }
            userId         = user.Id;
            UserName.Text  = user.Name;
            UserEmail.Text = user.Email;
            UserPhone.Text = user.Phone;
            UserAlarmSubscribing.Checked = user.AlarmSubscriber;
            UserCommandsAllowed.Checked  = user.CommandsAllowed;

            TelegramUserModel telegramUser = null;

            lock (DatabaseContext.DbLocker)
            {
                using (DatabaseContext db = new DatabaseContext(gs.DatabasePathBase))
                {
                    telegramUser = db.TelegramUsers.FirstOrDefault(x => x.LinkedUserId == user.Id);
                }
            }
            if (telegramUser != null)
            {
                TelegramAccount.SetSelection(TelegramUsers.Keys.ToList().IndexOf(telegramUser.Id));
            }

            UserCardHeader.Text    = GetText(Resource.String.edit_user_title);
            UserCardSubHeader.Text = GetText(Resource.String.edit_user_sub_title);

            AppCompatButton buttonDeleteUser = new AppCompatButton(this)
            {
                Text = GetText(Resource.String.delete_title)
            };

            buttonDeleteUser.SetTextColor(Color.DarkRed);
            buttonDeleteUser.Click           += ButtonDeleteUser_Click;
            buttonDeleteUser.LayoutParameters = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MatchParent, ViewGroup.LayoutParams.WrapContent);
            UserFooterLayout.AddView(buttonDeleteUser);
        }