你好,我有一個WPF應用程序中的依賴注入問題。這裏是我的代碼: App.xaml.cs:WPF依賴注入
IUnityContainer container = new UnityContainer();
container.RegisterType<ICarViewModel, CarViewModel>();
container.RegisterType<MainWindow>();
MainWindow mainWindow = container.Resolve<MainWindow>();
mainWindow.Show();
CarViewModel.cs:
public ObservableCollection<Car> Cars{ get; } = new ObservableCollection<Car>()
{
new Car() {Name = "Audi"},
new Car() {Name = "Peugeot"},
new Car() {Name = "Renault"},
};
CarView.cs:
public partial class CarView : UserControl, ICarView
{
public CarView()
{
InitializeComponent();
}
public CarView(CarViewModel carViewModel) : this()
{
DataContext = carViewModel;
}
}
CarView.xaml:
<ItemsControl ItemsSource = "{Binding Path = Cars}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation = "Horizontal">
<TextBlock Text = "{Binding Path = Name, Mode = OneWay}"/>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
MainWindow.xaml:
<view:CarView x:Name = "CarViewControl"></view:CarView>
Unity容器仍然只調用不帶CarView參數的構造函數。 感謝您的建議
取出無參數構造函數?這可能只是默認使用那個。 – Clint
什麼?請告訴我該怎麼做? – bluray
您只需刪除不帶任何參數的構造函數,並保留那個。確保將調用移動到'InitializeComponent()'到構造函數,該構造函數接受參數並移除':this()'調用,你應該沒問題。 – Clint