MVC5 Referencing ApplicationDbContext : IdentityDbContext<ApplicationUser>

Question

I was coding a MVC4 with EF application and is now in the process of upgrading it to MVC5 with EF. In MVC4 I followed a tutorial which created a DBContext as shown below(IssueContext.cs). I know that in MVC5 with Identity our DBContext must derive from IdentityDbContext. I'm having trouble referencing the IdentityDbContext in my Seed method.

using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
using RecreationalServicesTicketingSystem.Models;
using System.Collections.Generic;

internal sealed class Configuration : DbMigrationsConfiguration<RecreationalServicesTicketingSystem.DAL.IssueContext> <-- References the old one
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }

    protected override void Seed(RecreationalServicesTicketingSystem.DAL.IssueContext context)<--References the old one
    {



 //Errors on users (new users { FirstMidName.....})
        var users = new List<ApplicationUser>
    {
        new users { FirstMidName = "Jason",   LastName = "Wan",
            EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1, DepotID = 1,IsAdministrator = true},
        new users { FirstMidName = "Andy", LastName = "Domagas",
            EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1,DepotID = 1,IsAdministrator = true},
        new users { FirstMidName = "Denis",   LastName = "Djohar",
            EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 1 ,DepotID = 1,IsAdministrator = true },
        new users { FirstMidName = "Christine",   LastName = "West",
            EnrollmentDate = DateTime.Parse("2016-02-18"), DepartmentID = 2, DepotID = 3,IsAdministrator = false},

    };

 //Errors on UserID (... = users.Single(s => s.LastName == "Wan").UserID <--HERE)
        var tickets = new List<Ticket>
        {
            new Ticket {
                UserID = users.Single(s => s.LastName == "Wan").UserID,
                CategoryID = categories.Single(c => c.CategoryName == "Con-X" ).CategoryID,
                Issue = ("Con-X Login Error"),
                Priority = Priority.High
            },
            new Ticket {
                UserID = users.Single(s => s.LastName == "Wan").UserID,
                CategoryID = categories.Single(c => c.CategoryName == "Desktop" ).CategoryID,
                Issue = ("Can't remote access C0123"),
                Priority = Priority.Med
            },
        };

The type or namespace name 'DAL' does not exist in the namespace 'RecreationalServicesTicketingSystem' (are you missing an assembly refernce?)

DAL\IssueContext.cs (Old Data Class Context from MVC4)

namespace RecreationalServicesTicketingSystem.DAL
{
    public class IssueContext : DbContext
    {
        public DbSet<User> Users { get; set; }
        public DbSet<Ticket> Tickets { get; set; }
        public DbSet<Category> Categories { get; set; }
        public DbSet<Department> Departments { get; set; }
        public DbSet<Depot> Depots { get; set; }


        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();

        }
    }
}

Models\IdentityModels.cs (New Class MVC5 with Identity

using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
using System.Data.Entity;
using System.Security.Claims;
using System.Threading.Tasks;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using System;
using System.Collections.Generic;

namespace RecreationalServicesTicketingSystem.Models
    {
        public class ApplicationUser : IdentityUser
        {
            public async Task<ClaimsIdentity> 
                GenerateUserIdentityAsync(UserManager<ApplicationUser> manager)
            {
                var userIdentity = await manager
                    .CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
                return userIdentity;
            }

            public bool IsAdministrator { get; set; }
            [StringLength(50, MinimumLength = 1)]

            public string LastName { get; set; }
            [StringLength(50, MinimumLength = 1, ErrorMessage = "First name cannot be longer than 50 characters.")]

            [Column("FirstName")]
            public string FirstMidName { get; set; }

            public string FullName
            {
                get { return FirstMidName + " " + LastName; }
            }
            [DataType(DataType.Date)]
            [DisplayFormat(DataFormatString = "{0:yyyy-MM-dd}", ApplyFormatInEditMode = true)]
            public DateTime EnrollmentDate { get; set; }
            public int DepartmentID { get; set; }
            [ForeignKey("DepartmentID")]
            public virtual Department Department { get; set; }
            public int DepotID { get; set; }
            [ForeignKey("DepotID")]
            public virtual Depot Depot { get; set; }
            public virtual ICollection<Ticket> Tickets { get; set; }
        }


        public class ApplicationRole : IdentityRole
        {
            public ApplicationRole() : base() { }
            public ApplicationRole(string name) : base(name) { }
            public string Description { get; set; }

        }


        public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
        {
            public ApplicationDbContext()
                : base("DefaultConnection", throwIfV1Schema: false)
            {
            }


            public DbSet<Ticket> Tickets { get; set; }
            public DbSet<Category> Categories { get; set; }
            public DbSet<Department> Departments { get; set; }
            public DbSet<Depot> Depots { get; set; }

            static ApplicationDbContext()
            {
                Database.SetInitializer<ApplicationDbContext>(new ApplicationDbInitializer());
            }

            public static ApplicationDbContext Create()
            {
                return new ApplicationDbContext();
            }
        }
    }

Nkosi Nkosi · Accepted Answer · 2016-03-27T23:58:36

You are still referencing the old namespace and class. You need to change it to the new context. And since you are already including the using RecreationalServicesTicketingSystem.Models then all you need to do is remove the old referenced namespace.

using System;
using System.Data.Entity;
using System.Data.Entity.Migrations;
using System.Linq;
using RecreationalServicesTicketingSystem.Models; // this is the namespace that has the new context
using System.Collections.Generic;

internal sealed class Configuration : DbMigrationsConfiguration<ApplicationDbContext> //References the new one now
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = false;
    }

    protected override void Seed(ApplicationDbContext context)//References the new one now
    {...}
    //...other code removed for prebity
}

MVC5 Referencing ApplicationDbContext : IdentityDbContext<ApplicationUser>

1 Answers