private void UpdateData(BusinessClass.For @for)
{
dataGridView1.DataSource = BusinessClass.DataOutPut(@for);
PresentationLayerClass.AddItemsToComboBox(comboBox1, BusinessClass.For.Groupe);
PresentationLayerClass.AddItemsToComboBox(comboBox2, BusinessClass.For.Hostel);
PresentationLayerClass.AddItemsToComboBox(comboBox3, BusinessClass.For.Room);
}