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uwp - TabView suddenly missing from UWP

问题描述

Was trying to implement a TabView in my UWP project yesterday but it doesn't show up in the ToolBox and if I add it via code it says

TabView is not supported in a Windows Universal Project.

Though the documentation on the website is fairly recent and clear: https://docs.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/tab-view

I put the UWP requirement on latest Windows 10 build. Running Visual Studio 2019 Enterprise.

More information or help is appreciated.

标签： uwptabs

解决方案

从这个TabView 的文档中可以看到，TabView 在Microsoft.UI.Xaml.Controls命名空间下，适用于 WinUI。因此，您需要安装Microsoft.UI.Xaml nuget 包并将 Windows UI (WinUI) 主题资源添加到您的 App.xaml 资源中。然后在 xaml 中添加命名空间以使用它。

应用程序.xaml：

<Application ...>
    <Application.Resources>
        <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
    </Application.Resources>
</Application>

MainPage.xaml：

<Page
    ......
    xmlns:control="using:Microsoft.UI.Xaml.Controls">

    <Grid>
        <control:TabView HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
            ......
        </control:TabView>
    </Grid>
</Page>

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