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Startup.Cs File In Asp.Net Core

In this article, we will discuss the "startup.cs" file in asp.net core.

Purpose

The "startup.cs" performs the following actions.

Register the app service in the IOC container.
Configure the middleware.

But, What Are App Services?

App services add additional capabilities to the application. For example, the method "AddAuthentication" adds the service that enables authentication in the application.

This is how we register services in "startup.cs".

Picture Showing how to register services in ConfigureServices method of startup.cs

Click to Enlarge

What Is IOC?

IOC stands for "Inversion Of Control". The purpose is to implement automatic dependency injection.

Picture Showing how the dependency injection is implemented in ConfigureServices method of startup.cs

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What Is A Middleware?

Middleware is the software component in the application pipeline that processes the application request.

Picture Showing the diagrammatic representation of how middleware works in asp.net core

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Here is how the middleware is configured in the code.

Picture Showing how middlewares are added in the Configure method of startup.cs

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Posted By -	Karan Gupta

Posted On -	Monday, May 31, 2021

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