I am trying migration source code of a ASP.NET Core 3.x to version 6.x . Source code

How to fix?

CodePudding user response：

You can't inject services in Program.cs using constructor. This is where the application starts, dependency injection container is not created yet. Instead you can access configuration using builder.Configuration:

var builder = WebApplication.CreateBuilder(args);

builder.Services.Configure<AppSettings>(builder.Configuration.GetSection("AppSettings"));

var app = builder.Build();

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-6.0#access-configuration-in-programcs