You can simply add a custom dependency property to do this: 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)Ge
![Select multiple items from a DataGrid in an MVVM WPF project](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)