C# (CSharp) LopBUS.Lay_KyHieu примеры использования

Пример #1

 private void cmbKhoi_SelectedIndexChanged(object sender, EventArgs e)
 {
     if (cmbNamHoc.SelectedValue != null && cmbKhoi.SelectedValue != null)
     {
         String kyhieu = _lopBUS.Lay_KyHieu(cmbKhoi.SelectedValue.ToString());
         txtkyhieu.Text = kyhieu;
     }
 }