AspNetCore.Docs/aspnetcore/diagnostics/asp0012.md

title	description	author	monikerRange	ms.author	ms.date	uid
ASP0012: Suggest using builder.Services over Host.ConfigureServices or WebHost.ConfigureServices	Learn about analysis rule ASP0012: Suggest using builder.Services over Host.ConfigureServices or WebHost.ConfigureServices	safia	>= aspnetcore-7.0	safia	09/27/2022	diagnostics/asp0012

ASP0012: Suggest using builder.Services over Host.ConfigureServices or WebHost.ConfigureServices

	Value
Rule ID	ASP0012
Category	Usage
Fix is breaking or non-breaking	Non-breaking

Cause

ConfigureServices isn't the recommended strategy for registering services in DI in a minimal API application.

Rule description

ConfigureServices isn't the recommended strategy for configuring logging in a minimal API application.

var builder = WebApplication.CreateBuilder(args);

builder.Host.ConfigureServices(services =>
{
    services.AddAntiforgery();
})

var app = builder.Build();

app.Run();

How to fix violations

To fix a violation of this rule, use the Services property on the WebApplicationBuilder to modify the DI container directly without the need for an additional ConfigureServices call.

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddAntiforgery();

var app = builder.Build();

app.Run();

When to suppress warnings

Do not suppress a warning from this rule.