StudentEnrollmentNew/StudentEnrollment/StudentEnrollmentView/FormStudentCourse.cs

using StudentEnrollmentContracts.BusinessLogicContracts;
using StudentEnrollmentContracts.ViewModels;
using StudentEnrollmentDataModels.Models;

namespace StudentEnrollmentView
{
	public partial class FormStudentCourse : Form
	{
		private readonly List<CourseViewModel>? _list;
		public int Id
		{
			get
			{
				return Convert.ToInt32(comboBoxCourse.SelectedValue);
			}
			set
			{
				comboBoxCourse.SelectedValue = value;
			}
		}
		public ICourseModel? CourseModel
		{
			get
			{
				if (_list == null)
				{
					return null;
				}
				foreach (var elem in _list)
				{
					if (elem.course_id == Id)
					{
						return elem;
					}
				}
				return null;
			}
		}
		public FormStudentCourse(ICourseLogic logic)
		{
			InitializeComponent();
			_list = logic.ReadList(null);
			if (_list != null)
			{
				comboBoxCourse.DisplayMember = "name";
				comboBoxCourse.ValueMember = "course_id";
				comboBoxCourse.DataSource = _list;
				comboBoxCourse.SelectedItem = null;
			}
		}
		private void ButtonSave_Click(object sender, EventArgs e)
		{
			if (comboBoxCourse.SelectedValue == null)
			{
				MessageBox.Show("Выберите направление", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
				return;
			}
			DialogResult = DialogResult.OK;
			Close();
		}
		private void ButtonCancel_Click(object sender, EventArgs e)
		{
			DialogResult = DialogResult.Cancel;
			Close();
		}
	}
}