VS Community 2015 MVC模板-无法访问自定义模型

Question

I'm currently learning Asp.NET MVC, I have started with the Ouf of the Box template from Vs2015 but I am having problems getting data from custom table

Goal: My Goal is to add a contact list for the standard ApplicationUser using the following class:

public class UserContact
{        
    [Key]
    public virtual int Id { get; set; }

    public virtual ApplicationUser User { get; set; }
    public virtual ApplicationUser Contact { get; set; }
}

I have also added the following to my Application User:

public virtual ICollection<UserContact> ContactsList { get; set; }

And the following line to my ApplicationDbContext:

public DbSet<UserContact> UserContacts { get; set; }

The problem is that when I try to access the USerContacts table from my custome controller ContactController using

ApplicationDbContext db = new ApplicationDbContext();

var UserId = SomUserID  
db.UserContacts.Where(x => x.User == UserId)

The where clause does not get recognised at all. I have useed the commands enable-migration

add-migration ContactsList

update-database

Which ran with no errors and the table is now in the database. But I am unable to access the table. why? what am I doing wrong?

Please note that according to VS it is as if the .Where function is not available on the DbSet in my case

And linq is imported as this is the standard when adding a new empty controller with Vs2015.

The Database was created during the update-database

But ApplicationDbContext : IdentiyDbContext class does not let me access any other tables including Contact class, so, when I used in my controller

"db.UserContacts.Where < x => x.User == someID >();"

it doesn recognise what x.User is from the UserContact class.

Answer 1

EDIT: I found a stack overflow post where the user was missing a using statement:

using System.Linq;

DbContext -> DbSet -> Where clause is missing (Entity Framework 6)