什么是从棱镜导航控件动态加载次数的最佳方法 [英] What is the best method to load Views dynamically from a Navigation control in Prism

问题描述

我已经通过我的应用程序使用的发布对菜单项的点击使用EventAggregator事件的菜单控件实现导航功能。喜欢的东西，如下图所示，

I've implemented navigation through my application using a Menu control which publish an event using EventAggregator on click of menu item. Something like as shown below,

this.eventAggregator.GetEvent<ViewRequestedEvent>()
                    .Publish(new BusinessObject.Model.MenuModel
                    {
                        Module = "Dashboard",
                        PresenterClass = "DashboardViewModel"
                    });

大多数我的应用程序的模块是用户本次活动。他们使用过滤器来只订阅相关的模块

Most of the Modules in my application are subscriber to this event. They use a filter to subscribe only those events relevant to the Module

this.eventAggregator.GetEvent<ViewRequestedEvent>()
            .Subscribe(LoadViewRequest, ThreadOption.UIThread, true, i => i.Module == "Dashboard");

征求看法是这样处理的：

Request for View is handled like this:

private void LoadRequestedView(MenuModel menuItem)
{
    try
    {
        IDashboardViewModel viewModel = this.container.Resolve(Type.GetType(menuItem.PresenterClass)) as IDashboardViewModel;
        this.regionManager.Regions["ViewRegion"].Add(viewModel.View);
        this.regionManager.Regions["ViewRegion"].Activate(viewModel.View);
        this.eventAggregator.GetEvent<ViewNotificationEvent>().Publish(menuItem.Description);
    }
    catch (ResolutionFailedException) { }
}

如何您对此执行？如果你认为它很烂，帮助我提高，或提出一个更好的选择。

How do you rate this implementation? If you think it sucks, help me to improve it or suggest a better alternative.

推荐答案

我觉得你有一定的缺乏与此模型关注点分离。我一般尽量保持呈现给壳牌。请参阅我如何尔德实现这个这个问题。它简化了的东西，一个抽象的RegionManager的想法从模块远：

I think you have a certain lack for separation of concerns with this model. I generally try to keep presentation to the Shell. See this question for how I wold implement this. It simplifies things and abstracts the idea of a RegionManager away from the Modules:

的 http://stackoverflow.com/questions/1671526/integrating-modules-with-application-in-prism-aka-compositewpf/1676837#1676837

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