Entity Framework Code First - Cannot insert duplicate key in object 'db'

Question

I\'m using the new EF code first to one project of mine, and i\'m getting a weird error, my mode is:

abstract class Member
{
   public virtual int MemberId;
  ..         


        

Answer 1

1. Is MemberId autoIncremented?
2. Have you checked the id of your created users (with console.Writeline for exemple)?

3. Does it work if you do the following:

   x = ctx.Users.Create();        
   x.Name = "SomeUser";        
   ctx.SaveChanges();        
   y = ctx.Users.Create();        
   y.Name = "SomeUser2";        
   ctx.SaveChanges();
   

You should try to attach your entity before you modify it.