Why is the Xamarin.Forms toolbox view empty? - xaml

Visual Studio for Mac 7.0
I'm a new to use the Ide
image
in the picture,the toolbox is empty。
I entered it by hand
<Button Text="ok"/>
No code hints
How can I solve this problem?

This is working as expected. There is no visual designer for Xamarin.Forms. XAML must be written manually. You can however use the XAML previewer to assist you.
The Preview button can be displayed on the editor by right-clicking a
XAML file, and selecting Open With > XAML Viewer. The preview pane can
then be shown or hidden by pressing the Preview button in the
top-right corner of any XAML document window
Information about the previewer can be found here: https://developer.xamarin.com/guides/xamarin-forms/xaml/xaml-previewer/

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VS 2022 Preview not showing the XAML designer

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In this document, a user can open designer by right-clicking the xaml file, and choose View Designer. But, there is no command in the tooltip. How can I activate the designer?
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