Daily build: blazor.boot.json not found.

[marinasundstrom]

I'm trying out Blazor SSR with WebAssembly in a daily build - with an issue.

When I load the WebAssembly component the /blazor.web.js tries to load /_framework/blazor.boot.json but it doesn't exist.

What am I missing?

Daily build of SDK version: 8.0.100-preview

.6.23316.32

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>net8.0</TargetFramework>
    <Nullable>enable</Nullable>
    <ImplicitUsings>enable</ImplicitUsings>
  </PropertyGroup>

  <PropertyGroup>
    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="8.0.0-preview.6.23317.1" />
  </ItemGroup>

</Project>

using StoreSite;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorComponents()
                .AddServerComponents()
                .AddWebAssemblyComponents();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();

    //app.UseWebAssemblyDebugging();
}

app.UseHttpsRedirection();

app.UseStaticFiles();

app.UseRouting();

app.MapRazorComponents<App>()
    .AddServerRenderMode()
    .AddWebAssemblyRenderMode();

app.Run();

@page "/counter"
@attribute [RenderModeWebAssembly]

<PageTitle>Counter</PageTitle>

<h1>Counter</h1>

<p role="status">Current count: @currentCount</p>

<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>

@code {
    private int currentCount = 0;

    private void IncrementCount()
    {
        currentCount++;
    }
}

[marinasundstrom]

Does anyone know how to solve this?

[maraf]

The new "web" template doesn't support WebAssembly yet https://devblogs.microsoft.com/dotnet/asp-net-core-updates-in-dotnet-8-preview-5/#blazor

Also, while some of the APIs for the Blazor WebAssembly render mode have been added in this preview (like the [RenderModeWebAssembly] attribute), support for running interactively on WebAssembly isn’t fully implemented yet. That will come in a future update too.

[marinasundstrom]

Yes. But sure it would work with the daily build of .NET 8 Preview 6? There are tests utilizing [RenderModeWebAssembly] so I assume that it would work in a dev build?

[maraf]

The only tests that I found are these two

• aspnetcore/src/Components/Endpoints/test/RazorComponentEndpointDataSourceTest.cs

  Line 377 in 8e2851f

  [RenderModeWebAssembly]

• aspnetcore/src/Components/Endpoints/test/TestComponents/InteractiveWithInteractiveChild.razor

  Line 4 in 8e2851f

  <h1>This is @nameof(InteractiveWithInteractiveChild)</h1>

  used in

  aspnetcore/src/Components/Endpoints/test/EndpointHtmlRendererTest.cs

  Line 1126 in 8e2851f

  var result = await renderer.PrerenderComponentAsync(httpContext, typeof(InteractiveWithInteractiveChild),

But none of them really runs the app on WebAssembly.

[marinasundstrom]

Ok. I've seen the activity. Will wait and try again in a future build.