在WPF中选择CheckBoxColumn中的行时如何勾选DataGrid

<DataGrid AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridCheckBoxColumn Header="选择" Binding="{Binding IsSelected}" />
        <!-- 其他列 -->
    </DataGrid.Columns>
</DataGrid>

public class Item
{
    public bool IsSelected { get; set; }
    // 其他属性
}

public ObservableCollection<Item> Items { get; set; }

<DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Items}">
    <!-- 列定义 -->
</DataGrid>

private void DataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    foreach (Item selectedItem in e.AddedItems)
    {
        selectedItem.IsSelected = true;
    }

    foreach (Item deselectedItem in e.RemovedItems)
    {
        deselectedItem.IsSelected = false;
    }
}