How do i register UserManager with OWIN context? - asp.net-mvc

Question

When I create MVC 5 application in Visual Studio 2013, and choose Individual accounts as authentication then scaffolding automatically configures ASP Net Identity. It creates several classes along with ApplicationDbContext and ApplicationUserManager. It also registers these classes with OWIN context as below to use single instance per request.
public void ConfigureAuth(IAppBuilder app)
{
// Configure the db context, user manager and signin manager to use a single instance per request
app.CreatePerOwinContext(ApplicationDbContext.Create);
app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);
}
basically it registers static Create method of each class. This static method is responsible for creating instance of that class.
Quesion
1>If I don't want to use static create method, is the approach below correct?.
public class ApplicationDbContext : IdentityDbContext<ApplicationUser, ApplicationRole, string, IdentityUserLogin, IdentityUserRole, IdentityUserClaim>
{
public ApplicationDbContext(string connString)
: base(connString)
{
}
}
public void ConfigureAuth(IAppBuilder app)
{
var conString = ConfigurationManager.ConnectionStrings["Myconnection"].ConnectionString
app.CreatePerOwinContext(()=>new ApplicationDbContext(conString));
}
2> How do I register ApplicationUserManager without using the static Create method. (It must set UserValidator,PasswordValidator, UserTokenProvider etc)
Should I set Validators and UserTokenProvider in ApplicationUserManager's constructor? Like below
public class ApplicationUserManager : UserManager<ApplicationUser, string>
{
public ApplicationUserManager(ApplicationUserStore store)
: base(store)
{
base.UserValidator = new UserValidator<ApplicationUser>(manager)
{
AllowOnlyAlphanumericUserNames = false,
RequireUniqueEmail = true
};
// Configure validation logic for passwords
base.PasswordValidator = new PasswordValidator
{
RequiredLength = 6,
RequireNonLetterOrDigit = true,
RequireDigit = true,
RequireLowercase = true,
RequireUppercase = true,
};
base.EmailService = new EmailService();
//?????????How do I get options.DataProtectionProvider ??????
var dataProtectionProvider = options.DataProtectionProvider;
if (dataProtectionProvider != null)
{
base.UserTokenProvider =
new DataProtectorTokenProvider<ApplicationUser>(dataProtectionProvider.Create("ASP.NET Identity"));
}
}
3>In approach above How do I register ApplicationUserManager with OWIN context so that it create single instance per request? 'ApplicationUserManager also requires ApplicationUserStore and ApplicationDbContext..how do I pass those to ApplicationUserManager's constructor?