ApplicationRoleManager class in MVC 5 template

Question

When I try to add app.CreatePerOwinContext (ApplicationRoleManager.Create) to configauth, I was told that applicationRoleManager does not exist. Does anyone know why?

using Microsoft.Owin.Security.OAuth; using Microsoft.AspNet.Identity; using Microsoft.AspNet.Identity.EntityFramework; using Microsoft.AspNet.Identity.Owin; using Microsoft.Owin; using Microsoft.Owin.Security.Cookies; using Microsoft.Owin.Security.DataProtection; using Microsoft.Owin.Security.Google; using Owin; using System; using LaCeibaNetv4.Models; namespace LaCeibaNetv4 { public partial class Startup { // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864 public void ConfigureAuth(IAppBuilder app) { // Configure the db context and user manager to use a single instance per request app.CreatePerOwinContext(ApplicationDbContext.Create); app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create); 

Answer 1

I had the same problem and came across this code, which I used to add a class to my project:

 public class ApplicationRoleManager : RoleManager<IdentityRole> { public ApplicationRoleManager(IRoleStore<IdentityRole,string> roleStore) : base(roleStore) { } public static ApplicationRoleManager Create( IdentityFactoryOptions<ApplicationRoleManager> options, IOwinContext context) { var manager = new ApplicationRoleManager( new RoleStore<IdentityRole>(context.Get<ApplicationDbContext>())); return manager; } } 

Also, be sure to configure it at startup by adding this code snippet to Startup.Auth.cs:

 app.CreatePerOwinContext<ApplicationRoleManager>(Application‌​RoleManager.Create); 

The full article is available here: http://www.codeproject.com/Articles/762428/ASP-NET-MVC-and-Identity-Understanding-the-Basics