Book Image

Customizing ASP.NET Core 5.0

By : Jürgen Gutsch
Book Image

Customizing ASP.NET Core 5.0

By: Jürgen Gutsch

Overview of this book

ASP.NET Core is the most powerful Microsoft web framework. Although it’s full of rich features, sometimes the default configurations can be a bottleneck and need to be customized to suit the nature and scale of your app. If you’re an intermediate-level .NET developer who wants to extend .NET Core to multiple use cases, it's important to customize these features so that the framework works for you effectively. Customizing ASP.NET Core 5.0 covers core features that can be customized for developing optimized apps. The customization techniques are also updated to work with the latest .NET 5 framework. You’ll learn essential concepts relating to optimizing the framework such as configuration, dependency injection, routing, action filters, and more. As you progress, you’ll be able to create custom solutions that meet the needs of your use case with ASP.NET Core. Later chapters will cover expert techniques and best practices for using the framework for your app development needs, from UI design to hosting. Finally, you’ll focus on the new endpoint routing in ASP.NET Core to build custom endpoints and add third-party endpoints to your web apps for processing requests faster. By the end of this application development book, you’ll have the skills you need to be able to customize ASP.NET Core to develop robust optimized apps.
Table of Contents (15 chapters)

Creating custom endpoints

The easiest way to create an endpoint is by using the lambda-based endpoints:

endpoints.Map("/map", async context =>
{
    await context.Response.WriteAsync("OK");
});

This maps the /map route to a simple endpoint that writes the word "OK" to the response stream.

You might need to add the Microsoft.AspNetCore.Http namespace to the using statements.

You can also map specific HTTP methods (such as GET, POST, PUT, and DELETE) to an endpoint. The following code shows how to map the GET and POST methods:

endpoints.MapGet("/mapget", async context =>
{
    await context.Response.WriteAsync("Map GET");
});
endpoints.MapPost("/mappost", async context =>
{
    await context.Response.WriteAsync("Map POST");
});

We can also map two or more HTTP methods to an endpoint:

endpoints.MapMethods(
    ...