What is the startup class in ASP.NET core?

 Startup class is the entry point of the ASP.NET Core application. Every .NET Core application must have this class. This class contains the application configuration rated items. It is not necessary that class name must "Startup", it can be anything, we can configure startup class in Program class.

public class Program

 {

 public static void Main(string[] args)

 {

 CreateWebHostBuilder(args).Build().Run();

 }

 

 public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>

 WebHost.CreateDefaultBuilder(args)

 .UseStartup<TestClass>();

 }