public DetailHistory(ItemHistory item)
{
InitializeComponent();
itemName.Text = item.name;
itemQuantity.Text = item.quantity.ToString();
itemPurchased.Text = item.PurchasedDate.ToString();
int totalAm = item.quantity * item.price;
totalAmount.Text = totalAm.ToString();
}
void Buy(System.Object sender, System.EventArgs e)
{
//update: there is an anotherway: save the index and insert to position
//testing, not work
Item newItem = temp_item;
if (string.IsNullOrEmpty(number.Text) ||
mylist.SelectedItem == null)
{
DisplayAlert("Error ", "You have to select an Item and provide a new quantity", "OK");
}
else
{
int result = newItem.quantity - (Convert.ToInt32(number.Text));
//* case *//
if (result < 0)
{
DisplayAlert("Error", "Item is out of stock, please update the quantity and try again", "Continue");
//type.Text = "Total";
number.Text = "";
//total.Text = "";
}
else
{
//list_items.Insert(list_items.IndexOf(temp_item), newItem);
newItem.quantity = result; //update
list_items.Remove(temp_item);
//list_items.Remove(temp_item);
list_items.Add(newItem);
mylist.ItemsSource = list_items.Reverse();
// work
//mylist.ItemsSource = list_items;
//temp_item.quantity = 999;
//list_items.Add(temp_item);
//add to history
ItemHistory tempHistory = new ItemHistory(temp_item.name, temp_item.price, temp_item.quantity, DateTime.Now);
history.Add(tempHistory);
//reset
type.Text = "Total";
number.Text = "";
total.Text = "";
DisplayAlert("Success", "The quantity is updated", "Close");
}
}
//(e.SelectedItem as Item).price -= ;
}
void mylist_ItemSelected(System.Object sender, Xamarin.Forms.SelectedItemChangedEventArgs e)
{
temp_item = e.SelectedItem as ItemHistory;
Navigation.PushModalAsync(new DetailHistory(temp_item));
}
