How to use data annotations in C#

Take advantage of data annotations to decorate your models using attribute tags so that your application’s data definition can be managed in a single place.

How to use data annotations in C#
Metamorworks / Getty Images

Data annotations (available as part of the System. ComponentModel. DataAnnotations namespace) are attributes that can be applied to classes or class members to specify the relationship between classes, describe how the data is to be displayed in the UI, and specify validation rules. This article talks about data annotations, why they are useful, and how to use them in our .NET Core applications.

To work with the code examples provided in this article, you should have Visual Studio 2019 installed in your system. If you don’t already have a copy, you can download Visual Studio 2019 here

Copyright © 2020 IDG Communications, Inc.

How to choose a low-code development platform