Listbox绑定获取选中项值

Question

我是 Wpf 的新手，在获取列表框中的选定项时遇到问题我创建了一个带有列表框和文本框的简单 xaml。我使用绑定来填充我的列表框，包括我希望以后使用的触发器（选中或不选中）。

Xaml代码：

<ListBox x:Name="LstB_Checklist" HorizontalAlignment="Left" Height="190" Margin="39,45,0,0" VerticalAlignment="Top" Width="275" Background="#FF363636" BorderBrush="{x:Null}" FontSize="18" Foreground="White" BorderThickness="2" SelectionChanged="LstB_Checklist_SelectionChanged" SelectedItem="{Binding SelectedProperty,Mode=TwoWay}" >
        <ListBox.ItemContainerStyle>
            <Style TargetType="ListBoxItem">
                <Style.Triggers>
                    <Trigger Property="IsSelected" Value="True" >
                        <Setter Property="FontWeight" Value="Bold" />
                        <Setter Property="Background" Value="#FFFFDC00" />
                        <Setter Property="Foreground" Value="Black" />
                    </Trigger>
                </Style.Triggers>
                <Style.Resources>
                    <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="LightGray"/>
                </Style.Resources>
            </Style>
        </ListBox.ItemContainerStyle>
        <ListBox.ItemTemplate>
            <DataTemplate>
                <StackPanel Orientation="Horizontal">
                    <Image>
                        <Image.Style>
                            <Style TargetType="{x:Type Image}">
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding Checked}" Value="false">

                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding Checked}" Value="true">

                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </Image.Style>
                    </Image>

                    <TextBlock Text="{Binding  Path=Title, Mode=TwoWay}" />
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>
    <TextBox x:Name="txtb_Selection" HorizontalAlignment="Left" Height="23" Margin="60,264,0,0" TextWrapping="Wrap" Text="TextBox" VerticalAlignment="Top" Width="120"/>

在后面的代码中

public MainWindow()
    {
        InitializeComponent();
        List<LstB_Item> items = new List<LstB_Item>();
        items.Add(new LstB_Item() { Title = "Items 1", Checked = false });
        items.Add(new LstB_Item() { Title = "Items 2", Checked = false });
        items.Add(new LstB_Item() { Title = "Items 3", Checked = false });
        LstB_Checklist.ItemsSource = items;
    }

    public class LstB_Item : INotifyPropertyChanged
    {
        public string Title { get; set; }

        private bool _checked;

        public bool Checked
        {
            get { return _checked; }
            set { _checked = value; NotifyPropertyChanged(); }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        private void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }

    private void LstB_Checklist_SelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        txtb_Selection.Text = LstB_Checklist.SelectedItem.ToString();
    }

lisbox 已正确填充。我的问题是：获取所选项目值的正确代码是什么。

非常感谢支持

Answer 1

恐怕问题不是很清楚或答案很明显，但我 post 一个答案，它可以帮助：

可能的答案：

var selected = LstB_Checklist.SelectedItem as LstB_Item;
txtb_Selection.Text = selected.Title;

Listbox绑定获取选中项值

Listbox binding get selected item value

binding

selecteditem

listboxitem