private void btQuery_Click(object sender, EventArgs e)
        {
            CustomersListBLL GetCustomersQuery = new CustomersListBLL();

            dataGridView1.DataSource = GetCustomersQuery.CustomersListData();
        }
        private void LoadCustomers()
        {
            CustomersListBLL GetCustomerQuery = new CustomersListBLL();

            dataGridView1.DataSource = GetCustomerQuery.CustomersListData();
        }