Question

我不知道如何在MainWindowViewModel的constuctor调用中注入参数。我想要的是在viewmodellocator中注册当前主窗口（this）的实例。我怎么能做到这一点？

这是我在viewmodellocator类中的情况：

public ViewModelLocator()
{
    ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);

    //SimpleIoc.Default.Register<Window>();  //THIS IS NOT WORKING BECOUSE ITS A NEW INSTANCE, I NEED THE INSTANCE OF THE CURRENT MAINWINDOW HERE.
    SimpleIoc.Default.Register<MainWindowViewModel>();
}

MainViewModel：

public MainWindowViewModel(Window window)
{
    this.Window = window;

    //Listen out for the window resizing
    this.Window.StateChanged += StateChanged;
}

MainWindow.xaml

DataContext="{Binding MainWindow, Source={StaticResource Locator}}"

Answer 1

如果您希望将Window解析为MainWindow：

public ViewModelLocator()
{
    ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);

    SimpleIoc.Default.Register<System.Windows.Window>(() => System.Windows.Application.Current.MainWindow as MainWindow);
    SimpleIoc.Default.Register<MainViewModel>();
}

另请注意，您应该只绑定＆＃34; Main＆＃34;在您的XAML中：

DataContext="{Binding Main, Source={StaticResource Locator}}"

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