您只需添加一个 自定义依赖项属性 即可：
public class CustomDataGrid : DataGrid{ public CustomDataGrid () { this.SelectionChanged += CustomDataGrid_SelectionChanged; } void CustomDataGrid_SelectionChanged (object sender, SelectionChangedEventArgs e) { this.SelectedItemsList = this.SelectedItems; } #region SelectedItemsList public IList SelectedItemsList { get { return (IList)GetValue (SelectedItemsListProperty); } set { SetValue (SelectedItemsListProperty, value); } } public static readonly DependencyProperty SelectedItemsListProperty = DependencyProperty.Register ("SelectedItemsList", typeof (IList), typeof (CustomDataGrid), new Propertymetadata (null)); #endregion}现在您可以
dataGrid在XAML中使用它：
<Window x:Class="DataGridTesting.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:local="clr-namespace:DataGridTesting.CustomDatagrid" Title="MainWindow" Height="350" Width="525"> <DockPanel> <local:CustomDataGrid ItemsSource="{Binding Model}" SelectionMode="Extended" AlternatingRowBackground="Aquamarine" SelectionUnit="FullRow" IsReadonly="True" SnapsToDevicePixels="True" SelectedItemsList="{Binding TestSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/> </DockPanel></Window>我的
ViewModel：
public class MyViewModel : INotifyPropertyChanged{ private static object _lock = new object (); private List<MyModel> _myModel; public IEnumerable<MyModel> Model { get { return _myModel; } } private IList _selectedModels = new ArrayList (); public IList TestSelected { get { return _selectedModels; } set { _selectedModels = value; RaisePropertyChanged ("TestSelected"); } } public MyViewModel () { _myModel = new List<MyModel> (); BindingOperations.EnableCollectionSynchronization (_myModel, _lock); for (int i = 0; i < 10; i++) { _myModel.Add (new MyModel { Name = "Test " + i, Age = i * 22 }); } RaisePropertyChanged ("Model"); } public event PropertyChangedEventHandler PropertyChanged; public void RaisePropertyChanged (string propertyName) { var pc = PropertyChanged; if (pc != null) pc (this, new PropertyChangedEventArgs (propertyName)); }}我的模特：
public class MyModel{ public string Name { get; set; } public int Age { get; set; }}最后，这是后面的代码
MainWindow：
public partial class MainWindow : Window{ public MainWindow () { InitializeComponent (); this.DataContext = new MyViewModel (); }}我希望这种干净的MVVM设计能有所帮助。
