Unable to use `<HeadContent>` or `<PageTitle>` Blazor components

[IEvangelist]

Describe the bug

I cannot get the <title></title> to update in my app using the feature defined in #34218, when using .NET 6.0.100-preview.6.21355.2 — is this a bug, or is it not yet released? See #34218 (comment), for initial question.

To Reproduce

Create a new .NET 6.0.100-preview.6.21355. Blazor WebAssembly standalone project, and try using:

<!-- Title set via HeadContent -->
<HeadContent>
    <!-- This will replace the child content in the `HeadSection` in HeadRoot.razor -->
    <meta name="description" content="A page with a button clicked @currentCount times">
    <!-- ... -->
</HeadContent>

<!-- Or, if you just want to set the title -->
<PageTitle>@currentCount</PageTitle>

It doesn't work.

Exceptions (if any)

I was expecting this to work, since it doesn't — I'm curious where I might look to keep track of it's potential targeted release date?

Further technical details

Targeting version: 6.0.100-preview.6.21355.2

Currently using Visual Studio 2022 Preview (click to expand):

Details

Microsoft Visual Studio Enterprise 2022 Preview
Version 17.0.0 Preview 2.1
VisualStudio.17.Preview/17.0.0-pre.2.1+31521.260
Microsoft .NET Framework
Version 4.8.04084

Installed Version: Enterprise

Visual C++ 2022   00476-70000-00000-AA871
Microsoft Visual C++ 2022

.NET Core Debugging with WSL 2   1.0
.NET Core Debugging with WSL 2

ASP.NET and Web Tools 2019   17.0.303.37752
ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2019   17.0.303.37752
For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0   17.0.303.37752
Azure App Service Tools v3.0.0

Azure Functions and Web Jobs Tools   17.0.303.37752
Azure Functions and Web Jobs Tools

C# Tools   4.0.0-2.21362.3+5f7ddf6f02d40036fdbf823cd9910027da277acd
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Fabric.DiagnosticEvents   1.0
Fabric Diagnostic Events

Microsoft Azure Service Fabric Tools for Visual Studio   17.0
Microsoft Azure Service Fabric Tools for Visual Studio

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager   2.1.134+45632ee938.RR
Install client-side libraries easily to any web project

Microsoft MI-Based Debugger   1.0
Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual C++ Wizards   1.0
Microsoft Visual C++ Wizards

Microsoft Visual Studio Tools for Containers   1.2
Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Microsoft Visual Studio VC Package   1.0
Microsoft Visual Studio VC Package

Node.js Tools   1.5.30616.1 Commit Hash:ec56570a25c831a0257261b328704fb9d210dd56
Adds support for developing and debugging Node.js apps in Visual Studio

NuGet Package Manager   6.0.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension   1.0
ProjectServicesPackage Visual Studio Extension Detailed Info

Razor (ASP.NET Core)   17.0.0.2135615+c94df2e3bebc72c937da0389b22d730b5ea7b19b
Provides languages services for ASP.NET Core Razor.

Snapshot Debugging Extension   1.0
Snapshot Debugging Visual Studio Extension Detailed Info

SQL Server Data Tools   17.0.62107.02200
Microsoft SQL Server Data Tools

Syntax Visualizer   1.0
An extension for visualizing Roslyn SyntaxTrees.

TypeScript Tools   17.0.0701.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   4.0.0-2.21362.3+5f7ddf6f02d40036fdbf823cd9910027da277acd
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools   17.0.0-beta.21352.5+3af67cd8ffd73b2dc443e1e24dc0cf28f7e1c608
Microsoft Visual F# Tools

Visual Studio Code Debug Adapter Host Package   1.0
Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Container Tools Extensions   1.0
View, manage, and diagnose containers within Visual Studio.

Visual Studio IntelliCode   2.2
AI-assisted development for Visual Studio.

Visual Studio Tools for Containers   1.0
Visual Studio Tools for Containers

Here is my `dotnet --info` (click to expand):

Details

 dotnet --info
.NET SDK (reflecting any global.json):
 Version:   6.0.100-preview.6.21355.2
 Commit:    7f8e0d76c0

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19043
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\6.0.100-preview.6.21355.2\

Host (useful for support):
  Version: 6.0.0-preview.6.21352.12
  Commit:  770d630b28

.NET SDKs installed:
  2.1.816 [C:\Program Files\dotnet\sdk]
  2.2.401 [C:\Program Files\dotnet\sdk]
  3.0.103 [C:\Program Files\dotnet\sdk]
  3.1.411 [C:\Program Files\dotnet\sdk]
  5.0.301 [C:\Program Files\dotnet\sdk]
  5.0.302 [C:\Program Files\dotnet\sdk]
  6.0.100-preview.6.21355.2 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.All 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.17 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 5.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.0-preview.6.21355.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.17 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 5.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.0-preview.6.21352.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 3.1.16 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 3.1.17 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 5.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.0-preview.6.21353.1 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET runtimes or SDKs:
  https://aka.ms/dotnet-download

[javiercn]

Hey @IEvangelist,

It's not there yet, it'll be there in preview7.

[IEvangelist]

Hey @IEvangelist,

It's not there yet, it'll be there in preview7.

Hi @javiercn - part of my question on this was "I'm curious where I might look to keep track of it's potential targeted release date?" Is there a way to be a bit more self-serving, rather than posting an issue - where would I have been able to find this info?

[javiercn]

That's tricky, there are a few ways, but I wouldn't say they are obvious:

• The PR for the feature should have a milestone set on it.
• The issue should also have a milestone set on it (and the PR should be referenced).
• Finally, with those things, you could check the git history on a given branch (previewx) to see if its there.
  • If you don't find it, then check on main.