// GET: Invoices/SelectItems
public ActionResult SelectItems(int?id, int?Quantity)
{
var invoiceItems = new List <Lineitem>();
// load items from session
if (Session["InvoiceItems"] != null)
{
invoiceItems = (List <Lineitem>)Session["InvoiceItems"];
}
if (id != null)
{
if (invoiceItems.SingleOrDefault(ii => ii.product_inventory_id == id) == null)
{
if (Quantity > db.Product_Inventory.Find(id).unit_quantity)
{
return(RedirectToAction("Index", "SelectProductInventory", new { actionName = "SelectItems", controllerName = "Invoices", message = "Quantity requested is not available." }));
}
var li = new Lineitem();
li.lineitem_unit_quantity = Convert.ToInt32(Quantity);
li.CalculateTotal(Convert.ToInt32(id)); // assign product id and calculate total
li.ProductInventory.Product = db.Products.Find(li.ProductInventory.product_id); // assign product
invoiceItems.Add(li);
}
else
{
var li = invoiceItems.SingleOrDefault(ii => ii.product_inventory_id == id);
if (li != null)
{
if ((Quantity + li.lineitem_unit_quantity) > db.Product_Inventory.Find(id).unit_quantity)
{
return(RedirectToAction("Index", "SelectProductInventory", new { actionName = "SelectItems", controllerName = "Invoices", message = "Quantity requested is not available." }));
}
li.lineitem_unit_quantity += Convert.ToInt32(Quantity);
li.CalculateTotal(Convert.ToInt32(id));
li.ProductInventory.Product = db.Products.Find(li.ProductInventory.product_id);
}
}
}
Session["InvoiceItems"] = invoiceItems;
ViewBag.ActionTitle = "Select Items for ";
return(View(invoiceItems));
}
