Visual Studio not recognizing "Page" or "Grid" when Uno App re opened giving error Type Page not found

[AlistairMcKinnon]

Current behavior

Create New Uno Platform App in Visual Studio
Open MainPage.xaml, make small amendment by adding a TextBox
Hover over "Page", it says Microsoft.UI.XAML.Controls.Page
Run Windows version, everything works fine.
Run Android version on attached Android device, works fine
Close Visual Studio
Open Visual Studio
Re open App
Now MainPage.xaml underlines Page and Grid and says type not found are you missing an assembly.

Expected behavior

When App reopened, it should recognise Page and Grid as part of Microsoft.UI.XAML.Controls.

How to reproduce it (as minimally and precisely as possible)

No response

Workaround

No response

Works on UWP/WinUI

None

Environment

No response

NuGet package version(s)

No response

Affected platforms

WebAssembly, Android, iOS, macOS (AppKit), Mac Catalyst, Skia (WPF), Skia (GTK on Linux/macOS/Windows), Skia (Linux Framebuffer), Skia (Tizen), Windows

IDE

Visual Studio 2022

IDE version

No response

Relevant plugins

No response

Anything else we need to know?

No response

[jeromelaban]

Thanks for the report. Could you indicate which version of visual studio you are using? (17.?) Also, could you take a screenshot of your visual studio when this happens?

[AlistairMcKinnon]

Hi Jerome Thanks for your reply, I’m using Visual Studio 2022 version 17.7.0 Preview When I create the project everything is good. When I reopen it, the following errors occur. I’m really keen to get started with UnoPlatform. ***@***.*** Many thanks Alistair From: Jérôme Laban ***@***.******@***.***> Sent: Monday, July 10, 2023 6:35 PM To: unoplatform/uno ***@***.***> Cc: Alistair McKinnon ***@***.***>; Author ***@***.***> Subject: Re: [unoplatform/uno] Visual Studio not recognizing "Page" or "Grid" when Uno App re opened giving error Type Page not found (Issue #12776) Thanks for the report. Could you indicate which version of visual studio you are using? (17.?) Also, could you take a screenshot of your visual studio when this happens? — Reply to this email directly, view it on GitHub<#12776 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AHTRHRPRV6AALLHUCZTX3ZDXPQ4MJANCNFSM6AAAAAAZ5N5EZQ>. You are receiving this because you authored the thread.Message ID: ***@***.******@***.***>>

[MartinZikmund]

This is because you always need to select Windows as the target in the top left dropdown here in the XAML code window -

[MartinZikmund]

See #8774 for more info