private async void AddProduct(Product product)
{
this.decimalTextBox.Text = "1";
this.quantityDialog.Content = this.decimalTextBox;
this.quantityDialog.Title = "Enter quantity";
ContentDialogResult result = await this.ShowQuantityDialog();
if (result == ContentDialogResult.Primary)
{
TextBox input = (TextBox)quantityDialog.Content;
decimal.TryParse(input.Text, out decimal quantity);
if (quantity == 0)
{
quantity = 1;
}
if (quantity <= product.Quantity)
{
if (OrderItems.Any(p => p.OrderItem.ProductId == product.ProductId))
{
OrderItemListView existingItem = OrderItems.FirstOrDefault(p => p.OrderItem.ProductId == product.ProductId);
int index = OrderItems.IndexOf(existingItem);
existingItem.OrderItem.Quantity += quantity;
OrderItemListView orderItemListView = this.GetDuplicatedItem(existingItem);
OrderItems.RemoveAt(index);
OrderItems.Insert(index, orderItemListView);
}
else
{
OrderItemListView orderItem = new OrderItemListView
{
OrderItem = new OrderItem
{
Product = product,
ProductId = product.ProductId,
Quantity = quantity,
LineDiscount = 0,
SubTotal = this.GetSubTotal(product.SellingPrice, quantity, 0)
}
};
orderItem.ItemDeleteClicked += this.HandleItemDeleted;
OrderItems.Add(orderItem);
}
RaisePropertyChanged("OrderItems");
RaisePropertyChanged("IsProceedEnabled");
}
else
{
this.messageDialog.Content = "Insufficient quantity !";
await this.messageDialog.ShowAsync();
}
this.SearchText = product.Name;
}
this.SearchText = string.Empty;
}