MVC Repository, Unity, Identity Error - asp.net-mvc-5

Question

I'm starting a new project using MVC 5, Identity 2.x, Unity, and Dapper. I'm using the standard EF functionality for Identity but using Dapper for the rest of the DB access. I'm using a Repository Pattern for all my (non-Identity) DB calls.
I'm fairly new to Unity and Dapper but keep gettin a "Object reference not set to an instance of an object." error whenever I make a call to the DB interface in the Account Controller line from below:
var result = _companyaccountrepository.AddToCompanyUsers(model);
Can anyone point out what I'm doing wrong? Thanks in advance.
Account Controller
private ICompanyAccountRepository _companyaccountrepository { get; set; }
public ICompanyAccountRepository companyaccountrepository
{
get { return _companyaccountrepository ?? (_companyaccountrepository = new CompanyAccountRepository()); }
}
private ApplicationUserManager _userManager;
public ApplicationUserManager UserManager
{
get
{
return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
}
private set
{
_userManager = value;
}
}
private ApplicationSignInManager _signInManager;
public ApplicationSignInManager SignInManager
{
get
{
return _signInManager ?? HttpContext.GetOwinContext().Get<ApplicationSignInManager>();
}
private set { _signInManager = value; }
}
public AccountController()
{
}
public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager, ICompanyAccountRepository companyaccountrepository)
{
UserManager = userManager;
SignInManager = signInManager;
_companyaccountrepository = companyaccountrepository;
}
...
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> SignUp(RegisterUserAndCompanyViewModel model)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
user.FirstName = model.FirstName;
user.LastName = model.LastName;
var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
await SignInManager.SignInAsync(user, isPersistent: false, rememberBrowser: false);
var result = _companyaccountrepository.AddToCompanyUsers(model); //*** THIS IS WHERE THE PROBLEM OCCURS ****
return RedirectToAction("Confirmation");
}
AddErrors(result);
}
// If we got this far, something failed, redisplay form
return View(model);
}
Interface/Dapper SQL (dummy code to make it simple)
public interface ICompanyAccountRepository
{
CompanyUser AddToCompanyUsers(RegisterUserAndCompanyViewModel user);
}
public class CompanyAccountRepository : ICompanyAccountRepository
{
private string dbconn = ConfigurationManager.ConnectionStrings["DefaultConnection"].ConnectionString;
public bool AddToCompanyUsers(RegisterUserAndCompanyViewModel user);
{
using (SqlConnection cn = new SqlConnection(dbconn))
{
cn.Open();
cn.Insert(new CompanyUser() { CompanyId = user.companyid, UserId = user.id });
cn.Close();
}
return true;
}
}
Unity.Config
public static void RegisterTypes(IUnityContainer container)
{
// NOTE: To load from web.config uncomment the line below. Make sure to add a Microsoft.Practices.Unity.Configuration to the using statements.
// container.LoadConfiguration();
// TODO: Register your types here
//12-1-16 Need this for Identity
container.RegisterType<ApplicationDbContext>();
container.RegisterType<ApplicationSignInManager>();
container.RegisterType<ApplicationUserManager>();
container.RegisterType<EmailService>();
container.RegisterType<IAuthenticationManager>(
new InjectionFactory(c => HttpContext.Current.GetOwinContext().Authentication));
container.RegisterType<IUserStore<ApplicationUser>, UserStore<ApplicationUser>>(
new InjectionConstructor(typeof(ApplicationDbContext)));
container.RegisterType<AccountController>(
new InjectionConstructor(typeof(ApplicationUserManager), typeof(ApplicationSignInManager), typeof(ICompanyAccountRepository)));
container.RegisterType<AccountController>(
new InjectionConstructor());
//Identity / Unity stuff below to fix No IUserToken Issue - http://stackoverflow.com/questions/24731426/register-iauthenticationmanager-with-unity
//container.RegisterType<DbContext, ApplicationDbContext>(
// new HierarchicalLifetimeManager());
container.RegisterType<UserManager<ApplicationUser>>(
new HierarchicalLifetimeManager());
container.RegisterType<IUserStore<ApplicationUser>, UserStore<ApplicationUser>>(
new HierarchicalLifetimeManager());
container.RegisterType<ICompanyAccountRepository, CompanyAccountRepository>();
}
Thanks again for any suggestions.
NOTE: If I add instantiate the repository just before the AddToCompanyUsers call (below), it works fine. However, this breaks Unity/IOC
_companyaccountrepository= new CompanyAccountRepository();
var result = _companyaccountrepository.AddToCompanyUsers(model);

Answer 1

You can try it like this:
(this should fix your repository error. As for your userManager and signInManager, I believe you can improve how they are configured as well, but that will take to take a look on your startup.auth and your ApplicationDbContext and with all the Identity configuration)
Account Controller
private readonly ICompanyAccountRepository _companyaccountrepository;// { get; set; } -- remove the getter and setter here
//remove this
// public ICompanyAccountRepository companyaccountrepository
// {
// get { return _companyaccountrepository ?? (_companyaccountrepository = new CompanyAccountRepository()); }
// }
private ApplicationUserManager _userManager;
public ApplicationUserManager UserManager
{
get
{
return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
}
private set
{
_userManager = value;
}
}
private ApplicationSignInManager _signInManager;
public ApplicationSignInManager SignInManager
{
get
{
return _signInManager ?? HttpContext.GetOwinContext().Get<ApplicationSignInManager>();
}
private set { _signInManager = value; }
}
//I think you can remove the parameterless constructor as well
//public AccountController()
//{
//
//}
public AccountController(ApplicationUserManager userManager, ApplicationSignInManager signInManager, ICompanyAccountRepository companyaccountrepository)
{
UserManager = userManager;
SignInManager = signInManager;
_companyaccountrepository = companyaccountrepository;
}
...
EDIT
Change your constructor to:
public AccountController(ICompanyAccountRepository companyaccountrepository)
{
_companyaccountrepository = companyaccountrepository;
}