ASP.NET Core 3 and React

Understanding the backend entry point

An ASP.NET Core app is a console app that creates a web server. The entry point for the app is a method called Main in a class called Program, which can be found in the Program.cs file in the root of the project:

public class Program{    public static void Main(string[] args)    {        CreateWebHostBuilder(args).Build().Run();    }    public static IWebHostBuilder CreateWebHostBuilder(string[] args)     =>        WebHost.CreateDefaultBuilder(args)            .UseStartup<Startup>();}

This method creates a web host using WebHost.CreateDefaultBuilder, which configures items such as the following:

• The location of the root of the web content
• Where the settings are for items such as the database connection string
• The logging level and where the ...