WPF 在同一个 ListCollectionView 上使用多个过滤器

csharp
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Windows;
using System.Windows.Data;
namespace WpfApp
{
    public partial class MainWindow : Window
    {
        private ObservableCollection _people;
        private ListCollectionView _collectionView;
        public MainWindow()
        {
            InitializeComponent();
            // 初始化数据集合
            _people = new ObservableCollection
            {
                new Person("Alice", "Female", 25),
                new Person("Bob", "Male", 30),
                new Person("Charlie", "Male", 35),
                new Person("David", "Male", 40),
                new Person("Eve", "Female", 45)
            };
            // 创建 ListCollectionView
            _collectionView = new ListCollectionView(_people);
            // 创建过滤器
            var filter1 = new GenderFilter("Female");
            var filter2 = new AgeFilter(30);
            // 将过滤器应用到 ListCollectionView
            _collectionView.Filter = item => filter1.Filter(item) && filter2.Filter(item);
            // 将 ListCollectionView 绑定到 ListBox 控件
            ListBox.ItemsSource = _collectionView;
        }
    }
    public class Person
    {
        public string Name { get; set; }
        public string Gender { get; set; }
        public int Age { get; set; }
        public Person(string name, string gender, int age)
        {
            Name = name;
            Gender = gender;
            Age = age;
        }
    }
    public interface IFilter
    {
        bool Filter(object item);
    }
    public class GenderFilter : IFilter
    {
        private string _gender;
        public GenderFilter(string gender)
        {
            _gender = gender;
        }
        public bool Filter(object item)
        {
            if (item is Person person)
            {
                return person.Gender == _gender;
            }
            return false;
        }
    }
    public class AgeFilter : IFilter
    {
        private int _age;
        public AgeFilter(int age)
        {
            _age = age;
        }
        public bool Filter(object item)
        {
            if (item is Person person)
            {
                return person.Age > _age;
            }
            return false;
        }
    }
}