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Update 50-to-60.md (#23613)

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@ -127,7 +127,7 @@ See [Frequently asked questions](#faq) in this document for more details on the
* In [development mode](xref:fundamentals/environments), the developer exception page middleware is enabled by default. * In [development mode](xref:fundamentals/environments), the developer exception page middleware is enabled by default.
* The app name defaults to the entry point assembly's name: `Assembly.GetEntryAssembly().GetName().FullName`. When using the <xref:Microsoft.AspNetCore.Builder.WebApplicationBuilder> in a library, explicitly change the app name to the library's assembly to allow MVC's [application part discovery](xref:mvc/extensibility/app-parts) to work. See [Change the content root, app name, and environment](xref:migration/50-to-60-samples#ccr) in this document for detailed instructions. * The app name defaults to the entry point assembly's name: `Assembly.GetEntryAssembly().GetName().FullName`. When using the <xref:Microsoft.AspNetCore.Builder.WebApplicationBuilder> in a library, explicitly change the app name to the library's assembly to allow MVC's [application part discovery](xref:mvc/extensibility/app-parts) to work. See [Change the content root, app name, and environment](xref:migration/50-to-60-samples#ccr) in this document for detailed instructions.
* The endpoint routing middleware wraps the entire middleware pipeline, therefore there's no need to have explicit calls to `UseEndpoints` to register routes. `UseRouting` can still be used to specify where route matching happens. * The endpoint routing middleware wraps the entire middleware pipeline, therefore there's no need to have explicit calls to `UseEndpoints` to register routes. `UseRouting` can still be used to specify where route matching happens but `UseRouting` doesn't need to be explicitly called.
* The [pipeline](xref:fundamentals/middleware/index) is created before any <xref:Microsoft.AspNetCore.Hosting.IStartupFilter> runs, therefore exceptions caused while building the pipeline aren't visible to the `IStartupFilter` call chain. * The [pipeline](xref:fundamentals/middleware/index) is created before any <xref:Microsoft.AspNetCore.Hosting.IStartupFilter> runs, therefore exceptions caused while building the pipeline aren't visible to the `IStartupFilter` call chain.
* Some tools, such as EF migrations, use [Program.CreateHostBuilder](xref:fundamentals/host/generic-host) to access the app's `IServiceProvider` to execute custom logic in the context of the app. These tools have been updated to use a new technique to execute custom logic in the context of the app. [Entity Framework Migrations](/ef/core/managing-schemas/migrations/) is an example of a tool that uses `Program.CreateHostBuilder`in this way. We're working to make sure tools are updated to use the new model. * Some tools, such as EF migrations, use [Program.CreateHostBuilder](xref:fundamentals/host/generic-host) to access the app's `IServiceProvider` to execute custom logic in the context of the app. These tools have been updated to use a new technique to execute custom logic in the context of the app. [Entity Framework Migrations](/ef/core/managing-schemas/migrations/) is an example of a tool that uses `Program.CreateHostBuilder`in this way. We're working to make sure tools are updated to use the new model.
* It's ***not*** possible to [change any host settings such as app name, environment, or the content root](xref:migration/50-to-60-samples#ccr) after the creation of the <xref:Microsoft.AspNetCore.Builder.WebApplicationBuilder>. See [Customize IHostBuilder or IWebHostBuilder](xref:migration/50-to-60-samples#cii) for detailed instructions on changing host settings. The following highlighted APIs throw an exception: * It's ***not*** possible to [change any host settings such as app name, environment, or the content root](xref:migration/50-to-60-samples#ccr) after the creation of the <xref:Microsoft.AspNetCore.Builder.WebApplicationBuilder>. See [Customize IHostBuilder or IWebHostBuilder](xref:migration/50-to-60-samples#cii) for detailed instructions on changing host settings. The following highlighted APIs throw an exception: