UWP/MVVMlight:替换过时的ServiceLocator和SimpleIoc寄存器 [英] UWP / MVVMlight : Replacing Obsolete ServiceLocator and SimpleIoc Register

问题描述

我再次打开这个话题.

更新UWP应用时，我面临一个挑战: 我将提供更多详细信息:这是我的旧代码，更新之前可以在UWP/Win10 10240上完美运行 在我的app.xaml中

I face a probelm when I update my UWP app: I'm gonna give more detail: Here is my old code before update running perfectly on UWP/Win10 10240 in my app.xaml

<Application.Resources>
    <vm:ViewModelLocator x:Key="Locator" d:IsDataSource="True" />
</Application.Resources>

在我的App.xaml.cs

in my App.xaml.cs

public class ViewModelLocator
{
    public const string MainMenuPageKey = "MainMenuPage";
    public const string QuestionPageKey = "QuestionPage";

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

        var nav = new NavigationService();
        nav.Configure(MainMenuPageKey, typeof(MainMenuPage));
        nav.Configure(QuestionPageKey, typeof(QuestionPage));

        SimpleIoc.Default.Register<INavigationService>(() => nav);
        SimpleIoc.Default.Register<IDialogService, DialogService>();
        SimpleIoc.Default.Register<IDataService, DataService>();

        SimpleIoc.Default.Register<MainMenuViewModel>();

    }



    public MainMenuViewModel MainMenu=>
            ServiceLocator.Current.GetInstance<MainMenuViewModel>();

在我的vm:ViewModelLocator.cs中:

in my vm:ViewModelLocator.cs:

随着servicelocator的消失，我想更新到UWP/Win10 16299，这是我使用的代码:

I want to update to UWP/Win10 16299 as servicelocator has disappear, here is the code I use:

public const string MainMenuPageKey = "MainMenuPage";
    public const string QuestionPageKey = "QuestionPage";

    static ViewModelLocator()
    {          
        var nav = new NavigationService();

        nav.Configure(MainMenuPageKey, typeof(MainMenuPage));
        nav.Configure(QuestionPageKey, typeof(QuestionPage));


        SimpleIoc.Default.Register<INavigationService>();
        SimpleIoc.Default.Register<IDialogService, DialogService>();
        SimpleIoc.Default.Register<IDataService, DataService>();

        SimpleIoc.Default.Register<MainMenuViewModel>();

    }

    public MainMenuViewModel MainMenu => 
       SimpleIoc.Default.GetInstance<MainMenuViewModel>();

看起来像注册"会导致崩溃

it looks like 'register' creates the crash

您有解决这个问题的诀窍吗?

Do you have any trick to solve this?

致谢；

推荐答案

感谢您的帮助.

实际上是为了解决该问题，我在app.xaml.cs中动态创建了ViewModelLocator的实例.然后，在实例上放置一个断点.由于我在nuget中下载了ServiceLocator库，系统崩溃了.

Actually to solve it, I create dynamically an instance of the ViewModelLocator in my app.xaml.cs. Then I put a breakpoint on the instance. The system crashed because of the ServiceLocator library I've downloaded in nuget.

删除此Dll后，一切运行正常.

Once this Dll is deleted, everything runs fine.

这篇关于UWP/MVVMlight:替换过时的ServiceLocator和SimpleIoc寄存器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！