实体框架代码第一个一对一关系

Question

I'm trying to create a one-to-one relation between two tables, but as a result I have one-to-many. What is the problem with this code?

namespace EFCF_Demo.Models
{
    public class Post
    {
        [Key]
        public int ID { get; set; }
        public string Title { get; set; }
        public string MiniContent { get; set; }
        public string Author { get; set; }
        public DateTime PublishDate { get; set; }
        public int Rating { get; set; }
        public virtual Content MainContent { get; set; }   
    }

    public class Content
    {
        public int ID { get; set; }
        public virtual Post Post { get; set; }
        public string FullContent { get; set; }
    }

    public class PostEntities : DbContext
    {
        public DbSet<Post> Posts { get; set; }
        public DbSet<Content> Contents { get; set; }
    }
}

Answer 1

Don't you need PostId in the Content class, and ContentId in the Post class?

        public class Content
        {
            [Key]
            public int PostId { get; set; }
            public virtual Post Post { get; set; }
            public string FullContent { get; set; }
        }

what about this:) This should do it.

Answer 2

Problem was resolved by removing

public DbSet<Content> Contents { get; set; }

After that we don't need to use the Fluent API but I have some problems with saving.

Answer 3

Try this:

• http://social.msdn.microsoft.com/Forums/eu/adonetefx/thread/4b5a46e0-f5c2-4c38-a73c-0038eaef2537
• How to declare one to one relationship using Entity Framework 4 Code First (POCO)