StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentView/FormStudents.cs

using Microsoft.Extensions.Logging;
using StudentEnrollmentContracts.BindingModels;
using StudentEnrollmentContracts.BusinessLogicContracts;

namespace StudentEnrollmentView
{
    public partial class FormStudents : Form
    {
        private readonly ILogger _logger;
        private readonly IStudentLogic _logic;
        public FormStudents(ILogger<FormStudents> logger, IStudentLogic logic)
        {
            InitializeComponent();
            _logger = logger;
            _logic = logic;
        }

        private void FormStudents_Load(object sender, EventArgs e)
        {
            LoadData();
        }
        private void LoadData()
        {
            try
            {
                var list = _logic.ReadList(null);
                if (list != null)
                {
                    dataGridView.DataSource = list;
                    dataGridView.Columns["Id"].Visible = false;
					dataGridView.Columns["ExamPointsId"].Visible = false;
					dataGridView.Columns["StudentCourse"].Visible = false;
				}
                _logger.LogInformation("Загрузка студентов");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка загрузки студентов");
            }
        }
        private void buttonAdd_Click(object sender, EventArgs e)
        {
			var service = Program.ServiceProvider?.GetService(typeof(FormStudent));
			if (service is FormStudent form)
			{
				if (form.ShowDialog() == DialogResult.OK)
				{
					LoadData();
				}
			}
		}

        private void buttonUpd_Click(object sender, EventArgs e)
        {
			if (dataGridView.SelectedRows.Count == 1)
			{
				var service = Program.ServiceProvider?.GetService(typeof(FormStudent));
				if (service is FormStudent form)
				{
					form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
					if (form.ShowDialog() == DialogResult.OK)
					{
						LoadData();
					}
				}
			}
		}

        private void buttonDel_Click(object sender, EventArgs e)
        {
			if (dataGridView.SelectedRows.Count == 1)
			{
				if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
				{
					int id =
				   Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
					_logger.LogInformation("Удаление записи");
					try
					{
						if (!_logic.Delete(new StudentBindingModel
						{
							Id = id
						}))
						{
							throw new Exception("Ошибка при удалении. Дополнительная информация в логах.");
						}
						LoadData();
					}
					catch (Exception ex)
					{
						_logger.LogError(ex, "Ошибка удаления записи");
						MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
					}
				}
			}
		}

        private void buttonRef_Click(object sender, EventArgs e)
        {
			LoadData();
        }
    }
}