[Solved] ASP.Net Core Error: Cannot convert from Identity.IdentityRole to ApplicationUser

Hi,

Trying to run my application after adding role management code but i get this error.

cannot convert from 'Microsoft.AspNetCore.Identity.IdentityRole' to 'ExpenseTracker.Data.ApplicationUser'

public class UserRoleManagementController : Controller
{
    private readonly UserManager<ApplicationUser> userManager;
    private readonly RoleManager<ApplicationUser> roleManager;

    public UserRoleManagementController(UserManager<ApplicationUser> userManager,
                                        RoleManager<ApplicationUser> roleManager)
    {
        this.userManager = userManager;
        this.roleManager = roleManager;
    }

    [HttpGet]
    public IActionResult Index()
    {
        //get all users and send to view
        var users = userManager.Users.ToList();
        return View(users);
    }

    [HttpGet]
    public async Task<IActionResult> Details(string userId)
    {
        //find user by userId
        //Add UserName to ViewBag
        //get userRole of users and send to view
        var user = await userManager.FindByIdAsync(userId);

        ViewBag.UserName = user.UserName;

        var userRoles = await userManager.GetRolesAsync(user);

        return View(userRoles);
    }

    [HttpGet]
    public IActionResult AddRole()
    {
        return RedirectToAction(nameof(DisplayRoles));
    }

    [HttpPost]
    public async Task<IActionResult> AddRole(string role)
    {
        //create new role using roleManager
        //return to displayRoles
        await roleManager.CreateAsync(new IdentityRole(role));
        return RedirectToAction(nameof(DisplayRoles));
    }
}

error on this line

await roleManager.CreateAsync(new IdentityRole(role));

in program.cs:

builder.Services.AddIdentity<ApplicationUser, IdentityRole>(options => options.SignIn.RequireConfirmedAccount = true)
    .AddDefaultUI()
    .AddDefaultTokenProviders()
    .AddEntityFrameworkStores<ApplicationDbContext>();

Thanks