private string GetStatistic()
{
decimal sum_quantity = 0;
decimal sum_amount = 0;
decimal to_pay = 0;
int sum_noPrice = 0;
foreach (ShoppingListView view in this.liste)
{
ShoppingItemListResult shoppingItem = view.ShoppingItem;
sum_quantity += shoppingItem.Quantity;
if (shoppingItem.Price != null)
{
sum_amount += shoppingItem.Quantity * shoppingItem.Price.Value;
if (shoppingItem.Bought)
{
to_pay += shoppingItem.Quantity * shoppingItem.Price.Value;
}
}
else
{
sum_noPrice++;
}
}
string status;
if (this.liste.Count == 1)
{
status = string.Format("{0:n0} Position", this.liste.Count);
}
else
{
status = string.Format("{0:n0} Positionen", this.liste.Count);
}
if (sum_quantity > 0)
{
status += string.Format(", Anzahl {0:n0}", sum_quantity);
}
if (sum_amount > 0)
{
status += string.Format(", Betrag {0:n2} €", sum_amount);
}
if (sum_noPrice > 0)
{
status += string.Format(", {0:n0} Artikel ohne Preisangabe", sum_noPrice);
}
if (to_pay > 0)
{
status += string.Format("\nZu zahlen: {0:n2} €", to_pay);
}
return(status);
}
public ShoppingListView(ShoppingItemListResult article)
{
this.ShoppingItem = article;
}