Prism 请求导航到新视图 [英] Prism RequestNavigate to new view

问题描述

我将 WPF Prism 6 与 autofac 一起使用，并且在视图之间导航时遇到问题.我有一个视图，我只想在离开它之前一直保持活动状态，下次导航到它时，我想创建此视图的新版本.

I am using WPF Prism 6 with autofac and having issues navigating between views. What I have is a view that I only want to keep alive till I leave it, and the next time I navigate to it, I want to create a new version of this view.

加载时，我注册了一个IModule，它具有以下代码

On load, I regist an IModule that has the following code

_regionManager.RegisterViewWithRegion(RegionNames.MainRegion, 
                                      typeof(DxfDisplay.Views.DxfDisplay));

这会注册我的视图并且系统在初始加载时工作，我在视图模型上实现了 INavigationAware 和 IRegionMemberLifetime 接口并具有 public bool KeepAlive =>false; 实现 IRegionMemberLifetime 以便在我完成后处理我的视图.

This registers my view and the system works on initial load, I implement the INavigationAware and IRegionMemberLifetime interfaces on the view model and have public bool KeepAlive => false; implementing the IRegionMemberLifetime so that my view is disposed when I am done.

当我离开这个视图时一切正常，但是当我尝试使用

When I navigate away from this view everything is fine, but when I attempt to navigate to navigate to the view using

_regionManager.RequestNavigate(RegionNames.MainRegion, 
                               new Uri("DxfDisplay", UriKind.Relative), parameters);

未打开视图，也未调用视图模型构造函数.为了使导航正常工作，我需要再次向该区域注册视图.或者，如果我将 KeepAlive 更改为 true，我可以导航回原始视图，但如果 INavigationAware.IsNavigationTarget 返回 false，则我无法生成新视图.

The view is not opened and a view model constructor is not called. To make the navigation work correctly, I need to register with view with the region again. Or if I change the KeepAlive to true I can navigate back to the original view, but I cannot generate a new view if INavigationAware.IsNavigationTarget returns false.

我的问题是如何向区域管理器注册视图，以便在调用 _regionManager.RequestNavigate 时，它将创建视图的新实例并显示它.我觉得我错过了一些简单的东西，只是忽略了它.

My question is how do I register the view with the region manager in such a way that when I call _regionManager.RequestNavigate, it will create a new instance of the view and display it. I feel like I am missing something simple and just overlooking it.

推荐答案

_builder.RegisterTypeForNavigation();

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