public void refreshData()
        {
            listView_allDatalist.Items.Clear();
            groupBox_mode.Text = "Unselected";

            connect.Open();
            SQLiteCommand    command = new SQLiteCommand(QueryList.allDataSQL(), connect);
            SQLiteDataReader reader  = command.ExecuteReader();

            while (reader.Read())
            {
                bool     active = (bool)reader["active"];
                string[] items  = new string[] {
                    reader["year"] + "-" + reader["month"] + "-" + reader["day"],
                    reader["sethour"] + ":" + reader["setminute"],
                    reader["text"].ToString(),
                    active ? "O" : "X"
                };

                listView_allDatalist.Items.Add(new ListViewItem(items));
            }

            reader.Close();
            connect.Close();

            button_modify.Enabled = false;
            button_delete.Enabled = false;
            buttonClickDisableChanged();
        }