/// <summary>
/// Gets the existing connection if any for DB
/// Used for updating an existing medicine
/// </summary>
/// <param name="medicineId">Medicine to be retrieved from DB</param>
public MedicineViewModel(int medicineId)
{
db = App.ViewModel.db;
db.Refresh(RefreshMode.OverwriteCurrentValues, db.Medicines); // Clear any unsaved changes
Medicine = db.Medicines.SingleOrDefault(m => m.Id == medicineId);
}
/// <summary>
/// Gets the existing connection if any for DB
/// Creates an empty Medicine instance
/// Used for creating a new medicine as we do not have any ID for it yet
/// </summary>
public MedicineViewModel()
{
db = App.ViewModel.db;
db.Refresh(RefreshMode.OverwriteCurrentValues, db.Medicines); // Clear any unsaved changes
Medicine = new Medicine();
}