public ArrayList GetAll()
        {
            ArrayList DishList = new ArrayList();

            using (SqlConnection connection = new SqlConnection(connectString))
            {
                SqlCommand command = new SqlCommand("SELECT * FROM Dish;", connection);
                connection.Open();

                SqlDataReader reader = command.ExecuteReader();

                if (reader.HasRows)
                {
                    while (reader.Read())
                    {
                        int IdDish = reader.GetInt32(0);
                        string NameDish = reader.GetString(1);
                        int PriceDish = reader.GetInt32(2);
                        byte[] ImageDish = (byte[])reader[3];
                        int CatIdDish = reader.GetInt32(4);
                        string CatNameDish = GetCategoryName(CatIdDish);

                        DishList.Add(new DishData() { Id = IdDish, Name = NameDish, Price = PriceDish, CatId = CatIdDish, CatName = CatNameDish, Image = ImageDish});
                    }
                }
                reader.Close();

                return DishList;
            }
        }

private void LoadDishGridView()
        {
            DishGridView.Rows.Clear();

            if (CategoriesComboBox.SelectedIndex == 0)
            {
                btnEditCat.Enabled = false;

                foreach (DishData Dish in _Dish.GetAll())
                {
                    DishGridView.Rows.Add(Dish.Id, Dish.Name, Dish.Price, Dish.CatName, Dish.Image);
                }
            }
            else if (CategoriesComboBox.SelectedIndex > 0)
            {
                btnEditCat.Enabled = true;
                string CategoryName = CategoriesComboBox.SelectedItem.ToString();

                int CategoryID = _Category.GetId(CategoryName);
                foreach (DishData Dish in _Dish.GetAllfromCat(CategoryID))
                {
                    DishGridView.Rows.Add(Dish.Id, Dish.Name, Dish.Price, CategoryName, Dish.Image);
                }
            }
        }