I made some changes to a razor webapp that still uses asp.net-core-tag-helpers (which is deprecated but according to the docs can still be used). The biggest change is the switch to .net9.0. Locally the application runs fine. But if i run

dotnet publish -p:TargetFramework=net9.0 -p:Nullable=enable 
   -p:Version=1.0.4.0 -p:AssemblyVersion=1.0.4 -p:FileVersion=1.0.4.0 
   --self-contained --runtime win-x64
# i also tried
dotnet publish -c release --self-contained --runtime win-x64

And start the myrazor_webapp.exe under windows 10 i get

Unhandled exception. System.MissingMethodException: 
     Method not found: 
'Microsoft.AspNetCore.Builder.RouteHandlerBuilder 
 Microsoft.AspNetCore.Builder.EndpointRouteBuilderExtensions.MapGet(
 Microsoft.AspNetCore.Routing.IEndpointRouteBuilder, System.String, System.Delegate)'.
     at Program.<Main>$(String[] args)

This is the code in my program.cs

var builder = WebApplication.CreateBuilder(args);

// Logging
builder.Logging.ClearProviders();
builder.Logging.AddConsole(); 
builder.Logging.AddDebug();

// 2024-12-02
builder.Services.AddScoped<UserService>();

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddControllers(); 

// Entity Framework 
builder.Services.AddDbContext<NvTradeContext>();
// Register other repositories
builder.Services.AddScoped<IFooRepo, FooRepository>();
builder.Services.AddScoped<IBarRepo, BarRepository>();
// 2024-12-04 Prepare switch to Dapper
builder.Services.AddScoped<DatabaseRepository>();

builder.Services.AddHttpContextAccessor();

builder.Services.AddAuthentication(authOpt =>
    {
        authOpt.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
        authOpt.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
    })
    .AddJwtBearer(options =>
    {
        options.Authority = "https://localhost:7178/";
        options.Audience = "http://localhost:5057/";
    });

// add jwt token for later
builder.Services.AddAuthorization(options =>
{
    var policies = builder.Configuration.GetSection("Policies:Permissions").Get<List<string>>();
    policies.ForEach(p => 
    { 
        options.AddPolicy(p, policy => 
        { 
            policy.AddRequirements(new IsInRoleRequirement(p)); 
        }); 
    });
});

builder.Services.AddTransient<IAuthorizationHandler, IsInRoleAuthorizationHandler>();

var app = builder.Build();


app.UseStatusCodePages(async context =>
{
    var response = context.HttpContext.Response;
    if (response.StatusCode is (int)HttpStatusCode.Unauthorized or (int)HttpStatusCode.Forbidden)
        response.Redirect("/Info?error=Unauthorized");
});

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");     
    app.UseHsts();
}

using (var scope = app.Services.CreateScope())
{
    var services = scope.ServiceProvider;
    var context = services.GetRequiredService<NvTradeContext>();    
}


app.UseStaticFiles();
app.UseRouting();

app.UseAuthentication();
app.UseAuthorization();

app.MapRazorPages();
app.MapControllers(); 

app.Run();

Update for .net-8.0

I switched to .net-8.0 updated csproj-file and ran

dotnet publish -p:TargetFramework=net8.0 
               -p:Nullable=enable -p:FileVersion=1.0.4.0 
       --self-contained 
       --runtime win-x64

This solved the MissingMethodException Error but all styles and javascript files are 404 not found

How can i include all static files under wwwroot so that they are part of the selfcontained exe

C:devmyappwwwroot>tree
C:.
├───css
│   └── site.css
├───js
│   ├── FilterTable.js
│   └── site.js
├───lib
│   ├───bootstrap
│   │   └───dist
│   │       ├───css
│   │       └───js
│   ├───jquery
│   │   └───dist
│   ├───jquery-validation
│   │   └───dist
│   └───jquery-validation-unobtrusive
└───static

How to fix MissingMethodException

• What causes this?
• How to fix self contained with .net 9?
• How to include static assets with .net 8?