在Prism地区激活视图 [英] Activating views in regions in Prism

问题描述

我有问题，我似乎无法解决。我有一个创建了一个测试项目，使用MEF和Prism4。我创建了一个测试项目，其中我有2个视图，每个注册自己在一个区域内，还有一个按钮在另一个地区。当点击按钮时，我想要更改的视图到正确的视图。我认为错误的代码如下，任何人都有任何想法我在这里做错了什么？

I have problem that I don't seem to be able to solve. I have a created a test project, using MEF and Prism4. I've created a test project where I have 2 views and each of them register themselves inside a region, and also a button in another region. When the button is clicked, I want the view of change to the correct view. The code I think is wrong is below, anyone have any ideas what I am doing wrong here ?

    public void Initialize()
    {
        regionManager.RegisterViewWithRegion(RegionNames.MainRegion, typeof(Views.Module1View));

        Button button = new Button() { Content = "Module1" };
        button.Click += (o, i) =>
        {
            var region = this.regionManager.Regions[RegionNames.MainRegion];
            if (region != null)
            {
                region.Activate(typeof(Views.Module1View));
            }
        };

        regionManager.AddToRegion(RegionNames.NavigationRegion, button);
    }

我收到以下错误...

I get the following error ...

The region does not contain the specified view.
Parameter name: view

推荐答案

惊人什么一个良好的夜晚睡眠会做！我不得不从ServiceLocator获取视图。

Solved it - amazing what a good nights sleep will do! I had to get the view from the ServiceLocator.

    public void Initialize()
    {
        regionManager.RegisterViewWithRegion(RegionNames.MainRegion, () => 
            ServiceLocator.Current.GetInstance<Views.Module2View>());

        Button button = new Button() { Content = "Module2" };
        button.Click += (o, i) =>
        {
            var view = ServiceLocator.Current.GetInstance<Views.Module2View>();

            var region = this.regionManager.Regions[RegionNames.MainRegion];
            if (region != null)
            {
                region.Activate(view);
            }             
        };

        regionManager.AddToRegion(RegionNames.NavigationRegion, button);
    }

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