谁能提供Conductor.Collection.AllActive用法的任何简单工作示例？ [英] Can anybody provide any simple working example of the Conductor<T>.Collection.AllActive usage?

问题描述

有点奇怪，但是我真的在任何地方都找不到可行的示例。

It's a bit strange, but I really can't find a working example anywhere.

顺便说一句，我使用的是ViewModel-first方法（在WPF）。

By the way, I'm using a ViewModel-first approach (in WPF) if this is important.

谢谢。

推荐答案

如果您在此处进行讨论，您会发现AllActive的目的是组成多个Views / ViewModels放入一个包含ViewModel的视图。从您以前的评论来看，似乎这是您所期望的，但是我认为我至少要在这里引用它。

If you have a look at the discussion here you will see that the intent of AllActive is to compose several Views/ViewModels into a containing ViewModel. Judging from your previous comments it seems as if this is what you were expecting but I figured I'd at least reference it here.

您随后提到了在以下位置激活3个不同的ViewModels视图的不同区域。我过去处理此问题的方式是具有单独的属性，用于绑定/引用View中的ViewModel，然后将它们全部添加到Items中以获得导体行为。

You then mention activating 3 different ViewModels at different regions of the View. The way I've handled this in the past is to have separate properties for binding/referencing the ViewModels in the View, and then just adding all of them to Items to get the Conductor behavior.

public sealed class MyViewModel : Conductor<Screen>.Collection.AllActive
{
    public MyViewModel(IMagicViewModelFactory factory)
    {
        FirstSubViewModel = factory.MagicallyGiveMeTheViewModelIWant();
        SecondSubViewModel = factory.MagicallyGiveMeTheViewModelIWant();
        ThirdSubViewModel = factory.MagicallyGiveMeTheViewModelIWant();

        Items.Add(FirstSubViewModel);
        Items.Add(SecondSubViewModel);
        Items.Add(ThirdSubViewModel);
    }

    public Screen FirstSubViewModel { get; private set; }
    public Screen SecondSubViewModel { get; private set; }
    public Screen ThirdSubViewModel { get; private set; }
}

在MyView中，您会看到类似的内容。当然，您可以在视图中的任何位置放置这些 ContentControls 。

And in MyView you would have something like this. Of course you could put these ContentControls wherever you want to in the view.

<StackPanel>
    <ContentControl x:Name="FirstSubViewModel" />
    <ContentControl x:Name="SecondSubViewModel" />
    <ContentControl x:Name="ThirdSubViewModel" />
</StackPanel>

AllActive 的另一个常用用法是有项目清单。但是，这些项目非常复杂，足以保证拥有自己的需要激活的View / ViewModels。在那种情况下，您不必为视图具有单独的属性，只需将列表控件的 x：Name 设置为 Items 。

Another common use for AllActive is when you have a list of items. But the items are complex enough to warrant having their own View/ViewModels that require activation. In that case you would not have to have separate properties for the views as you would just set the x:Name of the list control to Items.

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