ISEbd-22_Rozhkov.I.E._Simple/GasStation/Forms/FormSelling.cs

using GasStation.Entities;
using GasStation.Repositories;
using GasStation.Repositories.Implementations;


namespace GasStation.Forms
{
    public partial class FormSelling : Form
    {
        private readonly ISellingRepository _sellingRepository;

        public FormSelling(ISellingRepository sellingRepository, IGasmanRepository gasmanRepository, IProductRepository productRepository)
        {
            InitializeComponent();
            _sellingRepository = sellingRepository ??
                throw new ArgumentNullException(nameof(sellingRepository));
            
            comboBoxGasman.DataSource = gasmanRepository.ReadGasman();
            comboBoxGasman.DisplayMember = "GasmanName";
            comboBoxGasman.ValueMember = "ID";

            comboBoxProduct.DataSource = productRepository.ReadProduct();
            comboBoxProduct.DisplayMember = "ProductName";
            comboBoxProduct.ValueMember = "ID";
        }

        private void ButtonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if (comboBoxGasman.SelectedIndex < 0 ||
                    comboBoxProduct.SelectedIndex < 0)
                {
                    throw new Exception("Имеются незаполненые поля");
                }

                _sellingRepository.CreateSelling(Selling.CreateSelling(0, (int)comboBoxGasman.SelectedValue!,
                    (int)comboBoxProduct.SelectedValue!, Convert.ToInt32(numericUpDownCount.Value)));

                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
        }

        private void ButtonCancel_Click(object sender, EventArgs e) => Close();
    }
}