//=============================================================== DELETE LINK ORDER
public IActionResult DeleteLinkOrder(int id)
{
var order = dbContext.Orders.FirstOrDefault(x => x.id == id);
dbContext.Remove(order);
var result = dbContext.SaveChanges();
var balance = dbContext.Balances.FirstOrDefault(x => x.DbPassportUserModelId == order.DbPassportUserModelId);
balance.TLBalance += order.ProductPrice;
dbContext.SaveChanges();
return(RedirectToAction("Index"));
}