我正在尝试从列表框中选择多个选项。我甚至尝试使用多选模式，但它不适用于此特定列表框但适用于其他列表框。 ListBox名称是listBox。我在OrderWindow类中动态地将数据添加到该列表中，并且我已经实现了selection_changed方法，但我无法选择多个项目，并且我还将列表绑定到此列表框。
以下是代码：
namespace ACW2
{
/// <summary>
/// Interaction logic for OrderWindow.xaml
/// </summary>
public partial class OrderWindow : Window
{
List<MenuClass> PizzaInStock = new List<MenuClass>();
List<InvClass> inventory = MainWindow.ItemList;
List<InvClass> pizzatoppings = new List<InvClass>();
List<String> Mainlist = new List<String>();
String addpizzas = "";
double pizzaprice = 0;
private void extratoppingslist(String name)
{
pizzatoppings = new List<InvClass>();
var pizza = MainWindow.MenuList.FirstOrDefault(x => x.Name == name);
List<Ingredient> originaltoppings = pizza.Ingredients;
int originaltoppingsize = pizza.Ingredients.Count;
if (originaltoppingsize >= 5)
{
return;
}
var allpizzatoppings = from a in inventory
where a.Category == "pizza"
select a;
foreach (InvClass item in allpizzatoppings)
{
int exists = 0;
if (originaltoppingsize == 5)
{
break;
}
foreach(Ingredient ing in originaltoppings)
{
if (item.Name.Equals(ing.Name))
{
exists = 1;
break;
}
}
if (exists == 0)
{
pizzatoppings.Add(item);
}
++originaltoppingsize;
}
listBox.ItemsSource = null;
listBox.ItemsSource = pizzatoppings;
}
private void updatepizzaprice()
{
pizzaprice = 0;
if (comboBox1.SelectedItem != null&& comboBox.SelectedItem != null)
{
String pizza = comboBox.SelectedItem.ToString();
String size = comboBox1.SelectedItem.ToString();
extratoppingslist(pizza);
var iteminlists = MainWindow.MenuList.FirstOrDefault(x => (x.Name == pizza) && (x.Size == size));
pizzaprice += (Convert.ToDouble(iteminlists.Price));
List<Ingredient> list = iteminlists.Ingredients;
if (checkBox.IsChecked == true)
{
foreach(Ingredient iss in list)
{
Trace.WriteLine(iss.Name);
}
var item = list.FirstOrDefault(x => x.Name == " dough");
var ingr= inventory.FirstOrDefault(x => x.Name == " dough");
pizzaprice += ((Convert.ToDouble(item.Quantity) * 0.1))*ingr.Price;
var items = list.FirstOrDefault(x => x.Name == " mozzarella");
var ingrs = inventory.FirstOrDefault(x => x.Name == " mozzarella");
pizzaprice += ((Convert.ToDouble(items.Quantity) * 0.15)) * ingrs.Price;
}
List<InvClass> toppings = listBox.SelectedItems.Cast<InvClass>().ToList();
foreach (InvClass top in toppings)
{
var item = inventory.FirstOrDefault(x => x.Name == top.Name);
Trace.WriteLine(top.Name);
if (iteminlists.Size == " regular")
{
pizzaprice += item.Price * 0.25;
}
else if (iteminlists.Size == " large")
{
pizzaprice += item.Price * 0.35;
}
else if (iteminlists.Size == " extra-large")
{
pizzaprice += item.Price * 0.75;
}
}
textBox.Text = "£ " + pizzaprice.ToString();
}
}
private void comboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
updatepizzaprice();
}
private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
updatepizzaprice();
}
private void checkBox_Checked(object sender, RoutedEventArgs e)
{
updatepizzaprice();
}
private void listBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
updatepizzaprice();
}
private void checkBox_unchecked(object sender, RoutedEventArgs e)
{
updatepizzaprice();
}
private void checkbox1_unchecked(object sender, RoutedEventArgs e)
{
updateburgerprice();
}
private void checkbox2_unchecked(object sender, RoutedEventArgs e)
{
updateburgerprice();
}
}
}
这是xml代码：
<Window x:Class="ACW2.OrderWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ACW2"
mc:Ignorable="d"
Title="OrderWindow" SizeToContent="WidthAndHeight">
<StackPanel Orientation="Vertical">
<Label x:Name="label10" Content="Create Order" HorizontalAlignment="Left" Margin="5" VerticalAlignment="Top" FontSize="24"/>
<StackPanel Orientation="Horizontal" VerticalAlignment="Top">
<StackPanel Orientation="Vertical" VerticalAlignment="Top">
<Label x:Name="label4_Copy" Content="Order Summary" Margin="5" FontSize="16"/>
<ListBox x:Name="listBox2" Height="160" Margin="5" MinWidth="180"/>
<Button x:Name="button4" Content="Remove Item" Margin="5" Width="75"/>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label13" Content="Ingredient Cost (£)" Margin="5" VerticalAlignment="Top"/>
<TextBox x:Name="textBox4" Height="24" Margin="5" TextWrapping="Wrap" Text="£" Width="80"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label12" Content="Net Profit (£)" Margin="5"/>
<TextBox x:Name="textBox5" Height="24" Margin="5" TextWrapping="Wrap" Text="£" Width="80"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label11" Content="Total Price(£)" Margin="5"/>
<TextBox x:Name="textBox1" Height="24" Margin="5" TextWrapping="Wrap" Text="£" Width="80"/>
</StackPanel>
<Button x:Name="button3" Content="Complete Order" Margin="5"/>
</StackPanel>
<StackPanel Orientation="Vertical" VerticalAlignment="Top">
<Label x:Name="label4" Content="1. Pizzas" Margin="5" FontSize="16"/>
<Border BorderBrush="Gray" BorderThickness="1" Margin="5">
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label1" Content="Pizza" Margin="5" />
<ComboBox x:Name="comboBox" Margin="5" Width="120" SelectionChanged="comboBox_SelectionChanged"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label" Content="Size" Margin="5"/>
<ComboBox x:Name="comboBox1" Margin="5" Width="120" SelectionChanged="comboBox1_SelectionChanged"/>
</StackPanel>
<CheckBox x:Name="checkBox" Content="Stuffed Crust" Margin="5" HorizontalAlignment="Center" Checked="checkBox_Checked" Unchecked="checkBox_unchecked"/>
<Label x:Name="label14" Content="Extra Toppings" Margin="5,5,5,0" HorizontalAlignment="Center"/>
<ListBox x:Name="listBox" Height="120" Margin="5,0,5,5" MinWidth="140" HorizontalAlignment="Center" SelectionChanged="listBox_SelectionChanged" SelectionMode="Multiple">
<ListBox.ItemTemplate>
<DataTemplate x:Name="Lists">
<TextBlock>
<Run Text="{Binding Name}"/>
<Run Text=" , "/>
<Run Text="{Binding Price}"/>
</TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label9" Content="Price (£)" Margin="5"/>
<TextBox x:Name="textBox" Height="24" Margin="5" TextWrapping="Wrap" Text="£" VerticalAlignment="Top" Width="80"/>
</StackPanel>
<Button x:Name="button" Content="Add to Order" Margin="5" Width="80" HorizontalAlignment="Right"/>
</StackPanel>
</Border>
</StackPanel>
<StackPanel Orientation="Vertical" VerticalAlignment="Top">
<Label x:Name="label5" Content="2. Burgers" Margin="5" FontSize="16"/>
<Border BorderBrush="Gray" BorderThickness="1" Margin="5">
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label2" Content="Burger" HorizontalAlignment="Left" Margin="5" VerticalAlignment="Top"/>
<ComboBox x:Name="comboBox2" HorizontalAlignment="Left" Margin="5" VerticalAlignment="Top" Width="107" SelectionChanged="comboBox2_SelectionChanged"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label3" Content="Size" Margin="5" VerticalAlignment="Center"/>
<RadioButton x:Name="radioButton" Content="1/4lb" HorizontalAlignment="Left" Margin="5" VerticalAlignment="Center" Checked="radioButton_Checked"/>
<RadioButton x:Name="radioButton1" Content="1/2lb" HorizontalAlignment="Left" Margin="5" VerticalAlignment="Center" Checked="radioButton1_Checked"/>
</StackPanel>
<StackPanel Orientation="Vertical" HorizontalAlignment="Center">
<CheckBox x:Name="checkBox1" Content="Salad" Margin="2" Checked="checkBox1_Checked" Unchecked="checkbox1_unchecked"/>
<CheckBox x:Name="checkBox2" Content="Cheese" Margin="2" Checked="checkBox2_Checked" Unchecked="checkbox2_unchecked"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
<Label x:Name="label8" Content="Price (£)" HorizontalAlignment="Left" Margin="5" />
<TextBox x:Name="textBox2" Height="24" Margin="5" TextWrapping="Wrap" Text="£" Width="80"/>
</StackPanel>
<Button x:Name="button1" Content="Add to Order" Margin="5" Width="80" HorizontalAlignment="Right" Click="button1_Click"/>
</StackPanel>
</Border>
</StackPanel>
<StackPanel Orientation="Vertical" VerticalAlignment="Top">
<Label x:Name="label6" Content="3. Sundries" Margin="5" FontSize="16"/>
<Border BorderBrush="Gray" BorderThickness="1" Margin="5">
<StackPanel Orientation="Vertical">
<ListBox x:Name="listBox1" Height="120" MinWidth="140" Margin="5" SelectionChanged="listBox1_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate x:Name="Lists11">
<TextBlock Background="{Binding Color}">
<Run Text="{Binding Name}"/>
</TextBlock>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<StackPanel Orientation="Horizontal">
<Label x:Name="label7" Content="Price (£)" Margin="5" VerticalAlignment="Top"/>
<TextBox x:Name="textBox3" Height="24" Margin="5" TextWrapping="Wrap" Text="£" Width="80"/>
</StackPanel>
<Button x:Name="button2" Content="Add to Order" HorizontalAlignment="Right" Margin="5" Width="80" Click="button2_Click"/>
</StackPanel>
</Border>
</StackPanel>
</StackPanel>
</StackPanel>
</Window>