public void RemoveFromPOSTransaction(HttpContextBase httpContext, string itemId)
{
POSTransaction posTransaction = GetPOSTransaction(httpContext, true);
POSTransactionItem item = posTransaction.POSTransactionItems.FirstOrDefault(p => p.Id == itemId);
if (item != null)
{
if (item.Quantity > 1)
{
--item.Quantity;
POSTransactionContext.Commit();
}
else
{
posTransaction.POSTransactionItems.Remove(item);
POSTransactionContext.Commit();
}
}
}
public void AddToPOSTransaction(HttpContextBase httpContext, string productId)
{
IProductRetrieveService productDataService = new ProductRetrieveService();
Product product = productDataService.GetProduct(productId);
if (product == null)
{
throw new Exception("Product not found.");
}
POSTransaction posTransaction = GetPOSTransaction(httpContext, true);
POSTransactionItem item = posTransaction.POSTransactionItems.FirstOrDefault(t => t.ProductId == productId);
if (item == null)
{
item = new POSTransactionItem()
{
POSTransactionId = posTransaction.Id,
ProductId = productId,
ProductName = product.Name,
ProductDescription = product.Description,
Quantity = 1,
Price = product.Price,
ModifiedAt = DateTime.Now
};
posTransaction.POSTransactionItems.Add(item);
}
else
{
++item.Quantity;
item.ModifiedAt = DateTime.Now;
}
POSTransactionContext.Commit();
}
