NamespaceA
----------
    public class Wrapper
    {
        private Connection _mysqlConnection;

        public Wrapper(String user, String pass, String hostname , String db)
        {
            _mysqlConnection = new Connection(user,pass, hostname , db);
            _defaultMysqlConnection = new Connection();
        }
    }

NamespaceB
----------

    public class Connection
    {
        private String _mysqlHostname;
        private String _mysqlUsername;
        private String _mysqlPassword;
        private String _mysqlDatabase;

        public Connection()
        {
            this.MySqlHostname = "defaultValue";
        this.MysqlUsername = "defaultValue";
        .......
        ......
        }
    public Connection(String user,String pass,String hostname, String db){
        this.MysqlHostname = hostname;
        .....
    }
        public String MySqlHostname
        {
            get { return _mysqlHostname; }
            set { _mysqlHostname = value; }
        }

        public String MySqlUsername
        {
            get { return _mysqlUsername; }
            set { _mysqlUsername = value; }
        }

        public String MySqlPassword
        {
            get { return _mysqlPassword; }
            set { _mysqlPassword = value; }
        }

        public String MySqlDatabase
        {
            get { return _mysqlDatabase; }
            set { _mysqlDatabase = value; }
        }
    }