EF 解除属性映射到数据库中 NotMappedAttribute无效解决办法

public class Unicorn
{
public int Id { get; set; }
[NotMapped]
public string Name { get; set; }

[Timestamp]
public byte[] Version { get; set; }

public int PrincessId { get; set; } // FK for Princess reference
public virtual Princess Princess { get; set; }
}

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
//不映射到数据库中
modelBuilder.Entity<BlogArticle>().Ignore(p => p.Title); 
}