public async void DeletePromotion()
{
CompanyViewModel.SelectedBranch.Promotions.RemoveAt(Promotions.FindIndex(p => p.Id.Equals(MySelectedPromotion.Id)));
await _promotionService.Delete(MySelectedPromotion);
RaisePropertyChanged(nameof(Promotions));
_navigationService.NavigateTo(nameof(BranchPromotionsPage));
}
public async void EditPromotion(string title, string description, DateTime startdate, DateTime enddate, bool usesCoupon)
{
MySelectedPromotion.Title = title;
MySelectedPromotion.Description = description;
MySelectedPromotion.StartDate = startdate;
MySelectedPromotion.EndDate = enddate;
MySelectedPromotion.UsesCoupon = usesCoupon;
CompanyViewModel.SelectedBranch.Promotions[Promotions.FindIndex(p => p.Id.Equals(MySelectedPromotion.Id))] = MySelectedPromotion;
await _promotionService.Update(MySelectedPromotion);
RaisePropertyChanged(nameof(Promotions));
_navigationService.NavigateTo(nameof(BranchPromotionsPage));
}
