ASP.NET Core 3 and React

Adding model validation

In this section, we are going to add some validation checks on the request models. ASP.NET Core will then automatically send HTTP status code 400 (bad request) with details of the problem.

Validation is critical to preventing bad data from getting in the database or unexpected database errors happening, as we experienced in the previous section. Giving the client detailed information for bad requests also ensures the development experience is good because this will help to correct mistakes.