The Value That Was Created By The Store Was Null?

The text describes an issue with an EF 6 Code First model with an attribute DatabaseGenerated(DatabaseGeneratedOption. Identity) that is not the primary key. When an insert is attempted, a null store-generated value is returned for non-nullable members of type Test and DateChanged. The SQL generated by Entity Framework 6 does not assign identity values in advance and attempts to match them up when the results of the trigger are known. If the property value is the CLR default, it should not be included in the insert and instead propagate back the store-generated value.

When trying to add a new object to the database using EF, the error message “A null store-generated value was returned for a non-nullable member ‘Id’ of type I check SQL” is thrown. This warning is related to the nullable reference warning in Entity Framework DbContext and DbSet: Non-nullable property ” must contain a non-null value when exiting constructor.

The text also discusses the issue with returning null values for properties that are not nullable, which can be resolved by changing the config. The author is trying to run an API project and is having trouble getting ValueGeneratedOnUpdate and ValueGeneratedOnAddOrUpdate() to work for a DateTimeOffset property in their model. They also discuss how to configure value generation for properties when using Entity Framework Core.

In conclusion, the text highlights the need for better configuration and handling of null/default values in Entity Framework models to ensure consistency and avoid issues with null values.