public abstract Database()
    {
        ReadConfig();
        connectionstring = "SERVER=" + server + ";" +
                "DATABASE=" + database + ";" +
                "UID=" + username + ";" +
                "PASSWORD=" + password + ";";
        try
        {
            connection = new MySqlConnection(connectionstring);
        }
        catch (MySqlException ex)
        {
            LogService.Log("ERROR - " + ex.ToString());
        }
    }