private ObjectContextManager(string connectionString, string label)
        {
            _label            = label;
            _connectionString = connectionString;

            _context = new Model.ComplexCommerce(connectionString);
            //_context.Connection.Open();

            //_context = new Model.ComplexCommerce();
            //_context.Database.Connection.Open();
        }
        private ObjectContextManager(string connectionString, string label)
        {
            _label = label;
            _connectionString = connectionString;

            _context = new Model.ComplexCommerce(connectionString);
            //_context.Connection.Open();

            //_context = new Model.ComplexCommerce();
            //_context.Database.Connection.Open();
        }