.NET Core 2.2 Web应用程序。 DbContext是通过依赖注入设置的，可以在运行时更改它吗？

Question

I'm trying to work with several databases in which have the same schema structure with my .NET Core 2.2 Web application (with Dependency Injection approach + Entity Framework). I want to allow user can choose (or change) the database at runtime. so I have 2 questions.

1. Is it possible to change DbContext during the runtime?

2. Is it possible to configure(Dependency Injection) DbContext after launching the application?

If so, How?

public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        public void ConfigureServices(IServiceCollection services)
        {
            ...

            services.AddDbContext<MyDbContext>(option => option.UseMySql(Configuration.GetConnectionString("DevConnection")));
            // Can I declare this after launching the app? or Can it be changed at Runtime?

            ...

Answer 1

I figured out. and also shared in other thread. Please check, If someone interested

https://stackoverflow.com/a/57064965/4735043