XAML error: Don't know how to detect when ReactiveUI.RoutedViewHost is activated/deactivated

Question

我正在尝试将 RoutedViewHost 添加到我的视图中：

<Window x:Class="MyNamespace"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MyNamespace"
        xmlns:rxui="http://reactiveui.net"
        mc:Ignorable="d"
        Title="MyView" Height="450" Width="800" WindowStyle="None">
    <rxui:RoutedViewHost x:Name="routedViewHost"
                         Grid.Row="1"
                         Grid.ColumnSpan="3">
        <rxui:RoutedViewHost.DefaultContent>

        </rxui:RoutedViewHost.DefaultContent>
    </rxui:RoutedViewHost>
</Window>

但是我得到一个错误：

Don't know how to detect when ReactiveUI.RoutedViewHost is activated/deactivated, you may need to implement IActivationForViewFetcher

并且不清楚具体应该实现 IActivationForViewFetcher 的内容。

我该如何解决这个问题？

Answer 1

这可能与以下错误有关：

https://github.com/reactiveui/ReactiveUI/issues/1696

是否只与设计师有关？

XAML error: Don't know how to detect when ReactiveUI.RoutedViewHost is activated/deactivated

XAML error: Don't know how to detect when ReactiveUI.RoutedViewHost is activated/deactivated

wpf

xaml

reactiveui