Error: the entity type requires a primary key

Question

I would like to expand the question asked on this thread

Binding listbox to observablecollection

by giving it an ability to persistent the data. The structur

Answer 1

Your Id property needs to have a setter. However the setter can be private. The [Key] attribute is not necessary if the property is named "Id" as it will find it through the naming convention where it looks for a key with the name "Id".

public Guid Id { get; }              // Will not work
public Guid Id { get; set; }         // Will work
public Guid Id { get; private set; } // Will also work