//Quan ly don vi thuoc
private void btnAddUnit_Click(object sender, RoutedEventArgs e)
{
AddUnitMedicine addUnit = new AddUnitMedicine(null);
addUnit.ShowDialog();
List <UnitMedicine> listUnit = DataManager.getInstance().getAllUnit();
unitDataGrid.DataContext = listUnit;
}
private void btnEditUnit_Click(object sender, RoutedEventArgs e)
{
UnitMedicine unit = unitDataGrid.SelectedItem as UnitMedicine;
AddUnitMedicine addUnit = new AddUnitMedicine(unit);
addUnit.ShowDialog();
List <UnitMedicine> listUnit = DataManager.getInstance().getAllUnit();
unitDataGrid.DataContext = listUnit;
}