List all users from asp.net core identity database

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In this video we will discuss how to retrieve and display all the registered application users in asp.net core using the identity api.


The registered users of our application are stored in AspNetUsers identity database table. We want to retrieve and display them on a view as you can see below.




Users property of UserManager service

Users property of asp.net core UserManager service returns a list of all application users

[Authorize(Roles = "Admin")]

public class AdministrationController : Controller

{

    private readonly UserManager<ApplicationUser> userManager;

    public AdministrationController(UserManager<ApplicationUser> userManager)

    {

        this.userManager = userManager;

    }

    [HttpGet]

    public IActionResult ListUsers()

    {

        var users = userManager.Users;

        return View(users);

    }

}

ASP.NET Core List Users View

@model IEnumerable<ApplicationUser>

@{

    ViewBag.Title = "All Users";

}

<h1>All Users</h1>

@if (Model.Any())

{

    <a asp-action="Register" asp-controller="Account"

       class="btn btn-primary mb-3" style="width:auto">

        Add new user

    </a>

    foreach (var user in Model)

    {

        <div class="card mb-3">

            <div class="card-header">

                User Id : @user.Id

            </div>

            <div class="card-body">

                <h5 class="card-title">@user.UserName</h5>

            </div>

            <div class="card-footer">

                <a href="#" class="btn btn-danger">Edit</a>

                <a href="#" class="btn btn-danger">Delete</a>

            </div>

        </div>

    }

}

else

{

    <div class="card">

        <div class="card-header">

            No users created yet

        </div>

        <div class="card-body">

            <h5 class="card-title">

                Use the button below to create a user

            </h5>

            <a class="btn btn-primary" style="width:auto"

               asp-controller="Account" asp-action="Register">

                Add new user

            </a>

        </div>

    </div>

}

Manage Users navigation menu

• In the navigation menu we want to display Manage dropdown menu
• It should contain 2 options - Users and Roles
• This dropdown menu should only be displayed if the user is signed-in and in the Admin role
• We are using Bootstrap 4 for the navigation menu

@inject SignInManager<ApplicationUser> signInManager;

@if (signInManager.IsSignedIn(User) && User.IsInRole("Admin"))

{

    <li class="nav-item dropdown">

        <a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink"

           data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">

            Manage

        </a>

        <div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">

            <a class="dropdown-item" asp-controller="Administration"

               asp-action="ListUsers">Users</a>

            <a class="dropdown-item" asp-controller="Administration"

               asp-action="ListRoles">Roles</a>

        </div>

    </li>

}

Change in Account Controller

An anonymous user can also register himself as an application user, using the following Register action method. This method is in the AccountController. The required change is commented.

[HttpPost]

[AllowAnonymous]

public async Task<IActionResult> Register(RegisterViewModel model)

{

    if (ModelState.IsValid)

    {

        var user = new ApplicationUser

        {

            UserName = model.Email,

            Email = model.Email,

            City = model.City

        };

        var result = await userManager.CreateAsync(user, model.Password);

        if (result.Succeeded)

        {

            // If the user is signed in and in the Admin role, then it is

            // the Admin user that is creating a new user. So redirect the

            // Admin user to ListRoles action

            if (signInManager.IsSignedIn(User) && User.IsInRole("Admin"))

            {

                return RedirectToAction("ListUsers", "Administration");

            }

            await signInManager.SignInAsync(user, isPersistent: false);

            return RedirectToAction("index", "home");

        }

        foreach (var error in result.Errors)

        {

            ModelState.AddModelError(string.Empty, error.Description);

        }

    }

    return View(model);

}