October 2018
Beginner to intermediate
478 pages
10h 8m
English
book
Hands-On Full-Stack Web Development with ASP.NET Core
by Tamir Dresher, Amir Zuker, Shay Friedman
Content preview from Hands-On Full-Stack Web Development with ASP.NET Core
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Model validation
Model validation is ASP.NET Core's ability to run validation rules on the input that your methods receive. The easiest way to define these validation rules is by using validation attributes that are part of the System.ComponentModel.DataAnnotations Namespace (https://docs.microsoft.com/en-us/dotnet/api/system.componentmodel.dataannotations?view=netframework-4.7.2), but you can define custom validations by inheriting from the ValidationAttribute base class. For sophisticated validation rules, I recommend that you use the popular FluentValidation library, available at https://github.com/JeremySkinner/FluentValidation.
There are plenty of built-in validation attributes, but here is a short list of some the most popular ones: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.