C#中BindingList的作用小结

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BindingList<string> names =newBindingList<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

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names.ListChanged += (sender, e) =>

{

Console.WriteLine($"列表已更改，类型: {e.ListChangedType}");

};

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publicclassPerson : INotifyPropertyChanged

{

privatestring_name;

publicstringName

{

get=> _name;

set{ _name = value; OnPropertyChanged(nameof(Name)); }

}

publiceventPropertyChangedEventHandler? PropertyChanged;

protectedvoidOnPropertyChanged(stringpropertyName) =>

PropertyChanged?.Invoke(this,newPropertyChangedEventArgs(propertyName));

}

// 使用

BindingList<Person> people =newBindingList<Person>();

dataGridView1.DataSource = people;

people.Add(newPerson { Name ="Bob"});

people[0].Name ="Alice";// 修改属性时，UI自动更新！

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// WinForms示例

BindingList<Product> products =newBindingList<Product>();

dataGridView1.DataSource = products;

// WPF示例（需配合ObservableCollection，但BindingList在某些场景仍有用）

listBox.ItemsSource = products;

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var logs =newBindingList<string>();

logs.ListChanged += (s, e) => Console.WriteLine($"日志变更: {logs[e.NewIndex]}");

logs.Add("系统启动");// 触发事件