Fix issue where WinUI C# and C++ item templates are not appearing in WinUI projects

[japarson]

Problem

In a previous PR, I attempted to prevent the WinUI C# templates from appearing in projects unrelated to WinUI. To do so, I set the ShowByDefault property to false. When this property is false, the decision to show/hide the item templates falls to the AppliesTo and TemplateGroupID properties.

The C# templates currently hold the value CSharp + SharedAssetsProject. However, an examination of the capabilities for a WinUI project reveals that SharedAssetsProject is no longer present:

The C++ templates currently hold no value for AppliesTo and TemplateGroupID.

Solution

For the C# templates, we can adjust the value for AppliesTo to be CSharp + WindowsAppSdk.

For the C++ templates, we can add the property AppliesTo with value VisualC + WindowsAppSdk. We can also add the property TemplateGroupID with value WinRT-Native-UAP, which comes from this table (link):

C#

C++

Work Item

microsoft/microsoft-ui-xaml#7148

[evelynwu-msft]

/azp run

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[evelynwu-msft]

[TRadigk]

I think it broke again in Version 17.3.0 Preview 2.0

[evelynwu-msft]

I think it broke again in Version 17.3.0 Preview 2.0

@TRadigk Could you explain what you mean? This fix hasn't been released yet so it shouldn't be possible for it to have regressed.

[kyoyama-kazusa]

Could you explain what you mean? This fix hasn't been released yet so it shouldn't be possible for it to have regressed.

It seems that I have missed reading this important reply. Thanks for your patience.

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The original reply:

@evelynwu-msft Hello. Sorry to disturb you.

I use VS 17.3 preview 2 but the same issue encountered.

Pictures:

Template missing:

The elementary WinUI VS extensions has been installed:

I use VS 17.3p2:

Templates has been successfully installed.

I don't think that the issue has been fixed in the current version. 😞

[TRadigk]

I think it broke again in Version 17.3.0 Preview 2.0

@TRadigk Could you explain what you mean? This fix hasn't been released yet so it shouldn't be possible for it to have regressed.

Thanks for the information. I was quite certain I had no trouble working with the templates recently, thus assuming prior the latest VS preview update.
Do you know of any workaround, to get it working until the fix is released? Re-installing the extension doesn't do the trick. I am glad I can continue most of my tasks in VS 2022 non-preview, so I am rather curious than limited by VS 2022 preview.

[evelynwu-msft]

@TRadigk This will be addressed in the upcoming servicing update for 1.1. Unfortunately, the only workaround until then is to install the WinAppSdk 1.0.4 extension (C# Visual Studio 2022 extension and C++ Visual Studio 2022 extension) and manually upgrade the package version when creating a new project (the package upgrade step can be skipped if you're working with an existing project).

[evelynwu-msft]

@TRadigk My mistake, the servicing update with the fixed templates has already been released; updating your installed extension to 1.1.2 should resolve this problem for you: C# Visual Studio 2022 extension and C++ Visual Studio 2022 extension.