public async Task DeleteDiscount(int id)
{
var result = await context.DiscountPeriods.FirstOrDefaultAsync(e => e.Id == id);
var discountTransaction = await context.DiscountTransaction.Where(x => x.DiscountPeriodId == id).ToListAsync();
var item = await context.Item.Where(x => x.DiscountId == id).ToListAsync();
if (discountTransaction != null)
{
context.DiscountTransaction.RemoveRange(discountTransaction);
await context.SaveChangesAsync();
}
if (item != null)
{
foreach (var i in item)
{
i.DiscountId = 0;
context.Entry(i).Property("DiscountId").IsModified = true;
context.SaveChanges();
}
}
if (result != null)
{
context.DiscountPeriods.Remove(result);
await context.SaveChangesAsync();
}
}
