Startup file is missing in Asp.net core mvc?

Question

in my every asp.net project, startup.cs file is missing?

Answer 1

You haven't shared which version of asp.net core mvc project you are using. Since ASP.NET Core MVC (.NET 6) you would not seen Startup.cs file, instead it has program.cs Let's have a look on following project architecture:

Note: You can have a look here in official sample and document.

Answer 2

The default asp.net core template does not use startup.cs anymore, but rather the new min api. There is just program.cs