Entity Framework Core Cookbook - Second Edition

Improving MVC UI with entity framework validation

In this recipe, we will leverage the data annotations to provide real-time feedback to the user, while those same annotations will validate objects before allowing them to be saved to the database. Because the UI uses the model properties to display errors, it is important that any validation exception thrown includes the property that caused it, so that the UI can reflect it.

Getting ready

We will be using NuGet Package Manager to install the Entity Framework Core 1 package, Microsoft.EntityFrameworkCore. We will also be using a SQL Server database for storing the data, so we will also need Microsoft.EntityFrameworkCore.SqlServer.

Finally, xunit is the package we will be using for the unit tests ...