Blazor Hybrid + Web solution template missing project refs in .sln when created via VS Code

[BethMassi]

Description

Trying out the new .NET Blazor Hybrid and Web App template in VS Code (with C# Dev Kit and MAUI extension installed), the .SLN file isn't generated properly so the solution never opens in the Solution Explorer. This happens on Windows and Mac.

Steps to Reproduce

C# Dev Kit v1.5.20
.NET MAUI extension v0.11.87
Microsoft.Maui.Templates.net8.8.0.100-dev.nupkg installed
Windows or Mac

• Create a new .NET project in VS Code (Windows or Mac) via the command pallet and select the new .NET MAUI Blazor and Web App template.

• Notice that it doesn't open the project in VS Code
• Open the folder and the projects are created but the .SLN is missing the project references.

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 17
VisualStudioVersion = 17.0.31903.59
MinimumVisualStudioVersion = 10.0.40219.1
Global
	GlobalSection(SolutionConfigurationPlatforms) = preSolution
		Debug|Any CPU = Debug|Any CPU
		Release|Any CPU = Release|Any CPU
	EndGlobalSection
	GlobalSection(SolutionProperties) = preSolution
		HideSolutionNode = FALSE
	EndGlobalSection
EndGlobal

Link to public reproduction project repository

No response

Version with bug

8.0.10 SR3

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

Windows, macOS

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

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Open similar issues:

• Multi-Project App Template is not generating a solution file when used from CLI (#21188), similarity score: 0.78

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[Zhanglirong-Winnie]

Verified this issue with VSCode 1.89.1(.net9). Can repro this issue.

[BethMassi]

This is still happening in VSCode v1.93 with C# DevKit v1.11.6 and .NET MAUI extension v1.3.29. What's weird is I don't see the new .NET MAUI Multi-project in VSCode (I see it on the CLI) so perhaps solution templates shouldn't be supported?

[mkArtakMSFT]

@vijayrkn do you own project creation experience in VSCode? Looks like the project creation for VS Code only is broken for this solution, and it works just fine when created from the CLI.

If you don't own this experience, can you please ping / include whoever does? Thanks in advance.

[vijayrkn]

Hey @mkArtakMSFT Tagging @smitpatel @JakeRadMSFT who owns this experience.

[smitpatel]

Where is the source for template?

[BethMassi]

@smitpatel https://github.com/dotnet/maui/tree/net9.0/src/Templates/src/templates/maui-blazor-solution

[smitpatel]

maui/src/Templates/src/templates/maui-blazor-solution/.template.config/template.json

Lines 25 to 40 in 0f4a170

	{
	"condition": "(HostIdentifier == \"dotnetcli\" || HostIdentifier == \"dotnetcli-preview\")",
	"path": "MauiApp.1/MauiApp.1.csproj"
	},
	{
	"condition": "(HostIdentifier == \"dotnetcli\" || HostIdentifier == \"dotnetcli-preview\")",
	"path": "MauiApp.1.Shared/MauiApp.1.Shared.csproj"
	},
	{
	"condition": "(HostIdentifier == \"dotnetcli\" || HostIdentifier == \"dotnetcli-preview\")",
	"path": "MauiApp.1.Web/MauiApp.1.Web.csproj"
	},
	{
	"condition": "(UseWebAssembly && (HostIdentifier == \"dotnetcli\" || HostIdentifier == \"dotnetcli-preview\"))",
	"path": "MauiApp.1.Web.Client/MauiApp.1.Web.Client.csproj"
	}

A project or solution template should add paths to csproj files in primary outputs. (the condition for dotnetcli is incorrect.

[BethMassi]

@smitpatel cool, is this something you can fix? Or @Eilon ?

[smitpatel]

@BethMassi submitted #25303

[Eilon]

Fixed by #25303. Thanks @smitpatel !!