Professional C# and .NET, 2021st Edition

24ASP.NET Core

WHAT'S IN THIS CHAPTER?

• Understanding ASP.NET Core and web technologies
• Using static content
• Creating middleware components
• Working with endpoint routing
• Working with HTTP request and response
• Using sessions for state management
• Hosting web applications with Microsoft Azure
• Creating Docker images

CODE DOWNLOADS FOR THIS CHAPTER

The source code for this chapter is available on the book page at www.wiley.com. Click the Downloads link. The code can also be found at https://github.com/ProfessionalCSharp/ProfessionalCSharp2021 in the directory 3_Web/ASPNETCore.

The code for this chapter is divided into the following major examples:

• SimpleHost
• WebSampleApp

Samples from this chapter mainly use the namespaces Microsoft.AspNetCore and System.Text (and subnamespaces). All the sample projects have nullable reference types enabled.

UNDERSTANDING WEB TECHNOLOGIES

After ASP.NET with the .NET Framework was released in 2002, ASP.NET Core (the first version released in 2016) was a complete rewrite that not only offers running this technology on Linux but also uses modern patterns (for example, dependency injection is built in) and offers new ways to create web applications. Razor Pages offer an easy way to create HTML pages mixed with C# code with support for dependency injection. From the outside, ASP.NET Core MVC looks similar to the previous MVC technology with ASP.NET, but inside it's very different. Blazor gives a full-stack .NET option. Instead of writing ...