所有-
我在我的WPF应用程序中使用Unity进行DI（没有棱镜）。我有我的MainWindow.xaml和MainWindowViewModel.cs。我的Mainwindow. xaml中有一个用户控件。用户控件有自己的uc1.xaml和uc1viewmodel.cs。UC 1ViewModel目前作为MainWindowViewModel的一个属性公开，因此我可以在usercontrol上设置datacontext（这里有很多人推荐）。
我的问题是如何/在哪里设置这个属性-它是在app.xaml.cs中还是在mainwindowviewmodel的构造函数中。Code Snippets：毕业证
App.xaml.cs

protected override void OnStartup(StartupEventArgs e)
    {
        base.OnStartup(e);

        //Step 1 - One Time - Creating an instance of the container
        UnityContainer unity = new UnityContainer();

        //Step 2 - Registering your MainWindowViewModel
        unity.RegisterType<IViewModel, UserControl1ViewModel>();

        //Step 3 - Creating an Instance
        UserControl1ViewModel uc1_mwvm = unity.Resolve<UserControl1ViewModel>();  <-- doesnt help
        MainWindowViewModel mwvm = unity.Resolve<MainWindowViewModel>();

        MainWindow mw = unity.Resolve<MainWindow>();

        mw.Show();
    }

MainWindowViewModel.cs

public class MainWindowViewModel
{
    public IViewModel IVM { get; set; }

    public MainWindowViewModel()
    {
        //IVM = new UserControl1ViewModel(); <-- All I really want is an equivalent but letting Unity do the work. 
    }
}

MainWindow.xaml

<Window x:Class="_05_ViewFist_UC_Unity_Working.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:uc1="clr-namespace:_05_ViewFist_UC_Unity_Working"
     xmlns:uc2="clr-namespace:_05_ViewFist_UC_Unity_Working"
    Title="MainWindow" Height="350" Width="525">
<StackPanel Orientation="Vertical">
    <TextBlock Text="{Binding NNN}" />
    <uc1:UC1 DataContext="{Binding UC1VM}" />
    <uc2:UC2 DataContext="{Binding UC2VM}" />
</StackPanel>
</Window>

UC1

<UserControl x:Class="_05_ViewFist_UC_Unity_Working.UC1"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d" 
         d:DesignHeight="300" d:DesignWidth="300" >
<StackPanel Orientation="Horizontal" Background="Red">
    <TextBlock Text="UC1 "  />
    <TextBlock Text="{Binding FirstName}"  />
</StackPanel>
</UserControl>

正如您从代码中看到的-UC 1的示例是在xaml（MainWindow.xaml）中创建的，因此当MainWindow示例在app.xaml.cs中创建时-它仍然不会创建UserControl 1ViewModel的示例。
问题是不要认为我在MainwindowViewModel的构造函数中调用Unity Resolve语句是一个很好的做法。对吗？？
有人能分享一个代码片段，告诉我如何/在哪里可以这样做吗？
谢谢