继承或封装View/Viewmodel
我想将一个视图/视图模型封装到另一个视图/视图模型中。目的是拥有一个弹出窗口、滑动面板或任何您能想到的常见行为，并在其中插入自定义视图/视图模型。
我想使用泛型来做到这一点，但我有点卡住了
父视图模型将看起来像那样
public class SidePanelViewModel<T>
{
public SidePanelViewModel(T enclosedViewModel)
{
EnclosedViewModel = enclosedViewModel;
}
public T EnclosedViewModel { get; private set; }
}
父视图将像那样
... whatever design and behavior ...
<ContentPresenter Content="{Binding EnclosedViewModel}"/>
... whatever design and behavior ...
在我的映射文件中我想将其放入，但问题是：
<DataTemplate DataType="{x:Type WPFTests:SidePanelViewModel}">
<WPFTests:SidePanelView />
</DataTemplate>
<DataTemplate DataType="{x:Type WPFTests:EnclosedViewModel}">
<WPFTests:EnclosedView />
</DataTemplate>
这不之所以有效，是因为视图模型 SidePanelViewModel 的构造函数需要创建一个类型。
我想我想做的是让一个视图/视图模型从另一个视图/视图模型继承
希望有人可以提供帮助
I want to encapsulate a view/viewmodel into another view/viewmodel. The aim is to have a popup, slide panel or whatever you can think of common behaviour and insert a custom view/viewmodel into it.
I want to use the generic for doing that but I'm kind of stuck
the parent view model will look like that
public class SidePanelViewModel<T>
{
public SidePanelViewModel(T enclosedViewModel)
{
EnclosedViewModel = enclosedViewModel;
}
public T EnclosedViewModel { get; private set; }
}
The parent view will be like that
... whatever design and behavior ...
<ContentPresenter Content="{Binding EnclosedViewModel}"/>
... whatever design and behavior ...
In my mapping file I would like to put that but here is the problem:
<DataTemplate DataType="{x:Type WPFTests:SidePanelViewModel}">
<WPFTests:SidePanelView />
</DataTemplate>
<DataTemplate DataType="{x:Type WPFTests:EnclosedViewModel}">
<WPFTests:EnclosedView />
</DataTemplate>
This does not work because the constructor of the viewmodel SidePanelViewModel requiere a type to be created.
I guess what I want to do is having a view/viewmodel inherit from another view/viewmodel
Hope someone can help on that
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为什么需要使用
难道不能只使用常规
对象或某种共享基础，例如IViewModel或ViewModelBase吗？Why do you need to use
<T>?Can't you just use a regular
objector some kind of shared base such asIViewModelorViewModelBase?在 WPF 中使用泛型类有时会非常痛苦。
我建议您创建一个基（抽象）类来实现您的（当然是虚拟的）方法的默认行为。
Working with generic classes in WPF can be quite painful sometimes ..
I would recommend you to create a base (abstract) class that implements the default behavior for your (virtual, of course) methods.