使用 MVVM light 在两个 WPF 应用程序之间共享视图
使用 MVVM Light，我有两个引用通用视图库的 WPF 应用程序。我还有一个 ViewModels 库。 ViewModels 库有一个 ViewModelLocator。
依赖关系非常简单： WPF 应用程序 ->浏览次数-> ViewModels
Views 库有一个 ResourceDictionary 并定义了一个 ViewModelLocator 资源，用于在运行时和设计时进行数据绑定：
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:ViewModels;assembly=ViewModels">
<vm:ViewModelLocator x:Key="Locator"/>
</ResourceDictionary>
问题是，当我在视图的顶层元素设置 DataContext 时，出现异常：
<UserControl x:Class="Views.WelcomeView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
DataContext="{Binding WelcomeViewModel, Source={DynamicResource Locator}}">
<Grid>
<TextBlock Text="{Binding Text}"/>
</Grid>
</UserControl>
异常： 无法在“Binding”类型的“Source”属性上设置“DynamicResourceExtension”。 “DynamicResourceExtension”只能在 DependencyObject 的 DependencyProperty 上设置
我做错了什么？将视图中的定位器定义为资源是否是最好的方法？
Using MVVM Light, I have two WPF applications that reference a common Views library. I also have a ViewModels library. The ViewModels library has a ViewModelLocator.
The dependencies are pretty simple:
WPF apps -> Views -> ViewModels
The Views library has a ResourceDictionary and defines a ViewModelLocator resource for data binding at runtime and design time:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:vm="clr-namespace:ViewModels;assembly=ViewModels">
<vm:ViewModelLocator x:Key="Locator"/>
</ResourceDictionary>
The problem is that when I go to set the DataContext at the top level element of my Views, I get an exception:
<UserControl x:Class="Views.WelcomeView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
DataContext="{Binding WelcomeViewModel, Source={DynamicResource Locator}}">
<Grid>
<TextBlock Text="{Binding Text}"/>
</Grid>
</UserControl>
Exception:
A 'DynamicResourceExtension' cannot be set on the 'Source' property of type 'Binding'. A 'DynamicResourceExtension' can only be set on a DependencyProperty of a DependencyObject
What am I doing wrong? Is defining the Locator in the Views as a resource even the best approach?
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您不能在绑定中使用
Source={DynamicResource Locator}。如果您使用Source属性，则需要使用StaticResourceYou cannot use
Source={DynamicResource Locator}in your binding. If you use theSourceproperty, you need to use aStaticResource