c# - 1 到 ef5 中与自身的多关系？

Question

我有这些类(class):

public class ContentType
{
    public int ContentTypeId{get;set;}
    public string Name{get;set;}
    public int Lang{get;set;}
    public bool IsPublished{get;set;}
    public int? ParentId { get; set; }
    public int UserId { get; set; }
    public virtual User User { get; set; }
}

public class Context : DbContext
{
public Context()
{
    base.Configuration.LazyLoadingEnabled = false;
    base.Configuration.ProxyCreationEnabled = false;
    base.Configuration.ValidateOnSaveEnabled = false;
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    base.OnModelCreating(modelBuilder);
    modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
}
public DbSet<ContentType> ContentTypes { get; set; }
}

现在每个内容类型都有一个父类和一个子类列表。如何使用 ef5 在模型和上下文中定义它？

Answer 1

如果你想让你的contenttype类有 child 使用这个代码:

public class ContentType
{
     ///other properties
     public ContentType Parent { get; set; }
     public int? ParentId { get; set; }
     public ICollection<ContentType> Childern { get; set; }
}

然后这样映射:

 protected override void OnModelCreating(DbModelBuilder modelBuilder)
 {
      modelBuilder.Entity<ContentType>()
            .HasMany(c => c.Children)
            .WithOptional(c => c.Parent)
            .HasForeignKey(c => c.ParentId);

    base.OnModelCreating(modelBuilder);

 }

你去..