WPF - 绑定到用户控件之间列表框的选定项

使用WPF（Windows Presentation Foundation）框架可以轻松地创建各种功能强大的用户界面。其中一项重要的功能是绑定，它允许我们将用户界面元素与数据源进行连接，实现动态更新和交互。在这篇文章中，我们将探讨如何在WPF中绑定列表框的选定项到用户控件，并提供一个实际的案例代码来帮助理解。

csharp
public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}
public ObservableCollection People { get; set; }

xaml

csharp
private Person _selectedPerson;
public Person SelectedPerson
{
    get { return _selectedPerson; }
    set
    {
        _selectedPerson = value;
        OnPropertyChanged(nameof(SelectedPerson));
        // 在这里可以执行其他操作
    }
}
public MainWindow()
{
    InitializeComponent();
    People = new ObservableCollection
    {
        new Person { Name = "John", Age = 25 },
        new Person { Name = "Alice", Age = 30 },
        new Person { Name = "Bob", Age = 35 }
    };
    DataContext = this;
}

csharp
// Person.cs
public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}
// MainWindow.xaml.cs
public partial class MainWindow : Window, INotifyPropertyChanged
{
    private Person _selectedPerson;
    public Person SelectedPerson
    {
        get { return _selectedPerson; }
        set
        {
            _selectedPerson = value;
            OnPropertyChanged(nameof(SelectedPerson));
            // 在这里可以执行其他操作
        }
    }
    public ObservableCollection People { get; set; }
    public MainWindow()
    {
        InitializeComponent();
        People = new ObservableCollection
        {
            new Person { Name = "John", Age = 25 },
            new Person { Name = "Alice", Age = 30 },
            new Person { Name = "Bob", Age = 35 }
        };
        DataContext = this;
    }
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName = null)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

xaml
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="WPF Binding ListBox SelectedItem" Height="450" Width="800">