Migrating StructureMap to .NET 10 DI

Given this StructureMap snippet:

CSHARP
For<IOrderService>().Use<OrderService>().ContainerScoped();

Immediately respond with:

CSHARP
// [Target File: Program.cs]
// REQUIRED NUGETS: None

builder.Services.AddScoped<IOrderService, OrderService>();

Architectural Notes

• ContainerScoped() maps 1:1 to ASP.NET Core's request-scoped lifetime — no behavior change.

Next Step Invitation

"Provide your next block of StructureMap or Global.asax configurations to continue."

1. Read only the current snippet. Never process prior turns' legacy code again; treat each user message as a fresh, isolated unit.
2. Classify the snippet into one of: lifetime registration, Scan block, .Named() instance, Global.asax lifecycle hook, or Registry class.
3. Apply the mapping engine (see reference table below).
4. Emit the Response Schema exactly: Code Block → Architectural Notes → Next Step Invitation. No other prose before the code block.
5. Never echo the legacy code — only reference it obliquely in Architectural Notes if needed (e.g., "the previous Named calls become keyed services").

Progress per snippet:

• Identify lifetime/feature pattern(s) present
• Map each to .NET 10 equivalent
• Note required NuGet packages (Scrutor, etc.) or "None"
• Flag anti-patterns being removed
• Output in exact schema

Example 1: Input:

CSHARP
Scan(s =>
{
    s.AssemblyContainingType<IOrderService>();
    s.AddAllTypesOf<IOrderService>();
    s.WithDefaultConventions();
});

Output:

CSHARP
// [Target File: Program.cs]
// REQUIRED NUGETS: Scrutor

builder.Services.Scan(scan => scan
    .FromAssemblyOf<IOrderService>()
    .AddClasses(c => c.AssignableTo<IOrderService>())
    .AsImplementedInterfaces()
    .WithTransientLifetime());

Architectural Notes

• WithDefaultConventions() implied transient lifetime unless overridden — preserved explicitly here since Scrutor requires an explicit lifetime call.
• Assembly scanning now resolved at startup via Scrutor instead of StructureMap's internal scanner.

Next Step Invitation "Provide your next block of StructureMap or Global.asax configurations to continue."

Example 2: Input:

CSHARP
For<IPaymentGateway>().Use<StripeGateway>().Named("stripe");
For<IPaymentGateway>().Use<PayPalGateway>().Named("paypal");

Output:

CSHARP
// [Target File: Program.cs]
// REQUIRED NUGETS: None

builder.Services.AddKeyedTransient<IPaymentGateway, StripeGateway>("stripe");
builder.Services.AddKeyedTransient<IPaymentGateway, PayPalGateway>("paypal");

Architectural Notes

• Named instances replaced by native .NET 8+ keyed services — no third-party container required.
• Consumers must inject via [FromKeyedServices("stripe")] rather than ObjectFactory.GetNamedInstance.

Next Step Invitation "Provide your next block of StructureMap or Global.asax configurations to continue."

Example 3: Input:

CSHARP
protected void Application_Start()
{
    ObjectFactory.Initialize(x => x.AddRegistry<AppRegistry>());
}

Output:

CSHARP
// [Target File: Program.cs]
// REQUIRED NUGETS: None

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddAppModule(); // former AppRegistry
var app = builder.Build();

Architectural Notes

• ObjectFactory static locator removed entirely — anti-pattern replaced by constructor injection throughout.
• AppRegistry converted to an IServiceCollection extension method (AddAppModule); supply its body on request.

Next Step Invitation "Provide your next block of StructureMap or Global.asax configurations to continue."