Entity Framework Code First will auto-create a table in the database base based on the Model.
Is there an attribute that will avoid this?
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3 Answers
Add the [System.ComponentModel.DataAnnotations.Schema.NotMapped] attribute to the property.
2 Comments
David Kirkland
Does this has the benefit (over fluent declaration) that annotated properties will (or should) be ignored by other data mappers/serializers, such as JSON serializers?
Kit
@DavidKirkland yes, it is quite possible. However, could lead to unwanted ignoring elsewhere. The Ignore() approach may be safer.
Per the accepted answer and similar question/answer, in addition to [NotMapped] you can also specify it using the Fluent API:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<TheModelAffected>().Ignore(t => t.TheIgnoredProperty);
base.OnModelCreating(modelBuilder);
}
1 Comment
Kiquenet
NotMapped attribute works for generate FK right. If I use Fluent API with Ignore (
builder.Ignore(c => c.Headers);) doesn't works. I have a List IEnumerable<MyTypeHeader> Headers[NotMapped] is the short version if you like conciseness. And of course, you would add:
using System.ComponentModel.DataAnnotations.Schema;
to your class.
