private void addButton_Click(object sender, EventArgs e)
 {
     if (itemComboBox.SelectedItem != null)
     {
         if (!string.IsNullOrEmpty(QuatityTextBox.Text))
         {
             da = new DataAccess();
             string        sql    = "SELECT Price FROM Menu WHERE MenuName='" + itemComboBox.SelectedItem.ToString() + "' ";
             SqlDataReader reader = da.GetData(sql);
             Menus         m      = new Menus();
             while (reader.Read())
             {
                 m.Price = (int)reader["Price"];
             }
             x = Convert.ToInt32(m.Price) * Convert.ToInt32(QuatityTextBox.Text);
             string text = itemComboBox.SelectedItem.ToString() + "    " + QuatityTextBox.Text + "    " + x + "taka";
             orderListBox.Items.Add(text);
             itemComboBox.SelectedItem = null;
             QuatityTextBox.Clear();
             Varriables.total(x);
         }
         else
         {
             MessageBox.Show("Please Select Quantity!");
         }
     }
     else
     {
         MessageBox.Show("Please select an item!");
     }
 }
        private void totalButton_Click(object sender, EventArgs e)
        {
            int    a     = 0;
            string text  = "_ _ _ _ _ _ _ _ _ _ _ _ _ ";
            string text2 = "    Total      =       " + Varriables.total(a) + "TAKA";

            orderListBox.Items.Add(text);
            orderListBox.Items.Add(text2);

            SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["HungerGamesDb"].ConnectionString);

            connection.Open();
            string     sql = "INSERT INTO Orders (EmployeeName, EmployeeId, Month, Price) VALUES ('" + nametextBox.Text + "','" + idtextBox.Text + "','" + dateTimePicker1.Text + "','" + Varriables.total(a) + "');";
            SqlCommand cmd = new SqlCommand(sql, connection);

            cmd.ExecuteNonQuery();



            MessageBox.Show("Your order has been placed");
        }