是否可以将UserControl的DataContext绑定到属性 [英] Is it possible to Bind the DataContext of a UserControl to a property

问题描述

我有一个用户控件，我想在两个不同的上下文中使用.用户控件需要将其DataContext设置为由父视图/视图模型创建的适当ViewModel的实例.

I have a user control that I would like to use in two different contexts. The user control needs its DataContext set to an instance of an appropriate ViewModel that has been created by the parent view/viewmodel.

我希望有这样的东西:

<local:Child DataContext="{Binding ChildViewModel}"/>

其中ChildViewModel是页面绑定到的ViewModel的inpc样式的属性.

where ChildViewModel is a inpc-styled property of the ViewModel that the page is bound to.

这似乎不起作用.是否可以通过使用绑定来分配DataContext?

That doesn't seem to work. Is it possible to assign the DataContext by using Binding?

推荐答案

将ContentControl的内容绑定到子ViewModel可能更简单，如下所示:

It would probably be simpler to bind the Content of an ContentControl to your child ViewModel like this:

<ContentControl Content="{Binding ChildViewModel}" />

..然后有一个DataTemplate来应用您的local:Child视图，就像这样

..and then have a DataTemplate to apply your local:Child View, like this

<DataTemplate DataType="{x:Type local:ChildViewModel}">
    <local:Child />
</DataTemplate>

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