We can also perform validations using data annotations on your entity class. This is even possible when Entity Framework is generating the entities. The major benefit of using data annotation-based validations is that it makes it very easy for us to perform validations by simply adding attributes to model properties. It is also helpful in scenarios where we want to use POCO generators with our Database First approach, where we will not have the partial methods made available to perform the validations.
Tip
Validations using data annotations can also be used in Entity Framework's Code First approach to perform model validations.
To perform model validations using data annotations, we need to add the validation attributes to our entity class. The first question that comes to mind now is how can we add the attributes to the entity classes since our entity classes are autogenerated by Entity Framework.
To add the validation attributes to our generated entity...