private void FormDetail_Load(object sender, EventArgs e) { if (id.HasValue) { try { DetailViewModel detailView = detail.GetElement(id.Value); if (detailView != null) { textBoxName.Text = detailView.DetailName; textBoxTotalAmount.Text = detailView.TotalAmount.ToString(); } } catch (Exception ex) { MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }