Using Entity Framework Code First CTP5, how do I create a primary key column that are INTs and are not identity columns

你说的曾经没有我的故事 提交于 2019-11-29 05:25:36
Matt Hamilton

If you're building your entities using the fluent interface rather than using attributes over the properties, you may be able to use the DatabaseGenerationOption class (from EntityFramework.dll, in the System.ComponentModel.DataAnnotations namespace). I've not tested it, but this is what it would look like:

modelBuilder
    .Entity<Foo>()
    .Property(f => f.Id)
    .HasDatabaseGeneratedOption(DatabaseGeneratedOption.None);

That answer didn't work for me (in EF 4.1).

To make this work, I added DatabaseGenerated attribute to my key column:

public class FacebookUser
{
  [Key]
  [DatabaseGenerated(DatabaseGeneratedOption.None)]
  public long FacebookId { get; set; }

  // ...
}

Hope this helps someone.

venkat

Small Change

public class User
{

  [Required, Key, DatabaseGenerated(DatabaseGeneratedOption.None)]

  public int ID { get; set; }

  // Rest of the code
}
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