如何使用接口而不是具体类作为DataContext - wpf，autoface.

public interface IDataService
{
    string GetData();
    void SaveData(string data);
}

public class DataService : IDataService
{
    public string GetData()
    {
        // 实现获取数据的逻辑
    }

    public void SaveData(string data)
    {
        // 实现保存数据的逻辑
    }
}

var builder = new ContainerBuilder();
builder.RegisterType<DataService>().As<IDataService>();
var container = builder.Build();

<Window x:Class="MyApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:MyApp"
        Title="My App" Height="450" Width="800">
    <Window.DataContext>
        <local:IDataService/>
    </Window.DataContext>
    <!-- 其他XAML内容 -->
</Window>

public class MainViewModel
{
    private readonly IDataService _dataService;

    public MainViewModel(IDataService dataService)
    {
        _dataService = dataService;
    }

    // 使用_dataService进行数据操作
}