C#中BindingList的作用小结

BindingList<string> names = new BindingList<string>();
dataGridView1.DataSource = names; // 绑定到DataGridView

names.Add("Alice"); // 添加项时，DataGridView会自动更新显示
names.RemoveAt(0);  // 删除项时，UI同步更新

names.ListChanged += (sender, e) => 
{
    Console.WriteLine($"列表已更改，类型: {e.ListChangedType}");
};

public class Person : INotifyPropertyChanged
{
    private string _name;
    public string Name
    {
        get => _name;
        set { _name = value; OnPropertyChanged(nameof(Name)); }
    }
    public event PropertyChangedEventHandler? PropertyChanged;
    protected void OnPropertyChanged(string propertyName) =>
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}

// 使用
BindingList<Person> people = new BindingList<Person>();
dataGridView1.DataSource = people;

people.Add(new Person { Name = "Bob" });
people[0].Name = "Alice"; // 修改属性时，UI自动更新！

// WinForms示例
BindingList<Product> products = new BindingList<Product>();
dataGridView1.DataSource = products;

// WPF示例（需配合ObservableCollection，但BindingList在某些场景仍有用）
listBox.ItemsSource = products;

var logs = new BindingList<string>();
logs.ListChanged += (s, e) => Console.WriteLine($"日志变更: {logs[e.NewIndex]}");
logs.Add("系统启动"); // 触发事件