Добавил контроллер для работы с пользователями

webinar65/Controllers/RoleController.cs

 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.AspNetCore.Mvc;
-using webinar65.Models;
 using webinar65.ViewModels;
 
 namespace webinar65.Controllers

webinar65/Controllers/UserController.cs

+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc;
+using webinar65.Models;
+using webinar65.ViewModels;
+
+namespace webinar65.Controllers
+{
+    public class UserController : Controller
+    {
+        private UserManager<User> _userManager;
+        private RoleManager<IdentityRole> _roleManager;
+
+
+        public UserController(UserManager<User> userManager, RoleManager<IdentityRole> roleManager)
+        {
+            _userManager = userManager;
+            _roleManager = roleManager;
+        }
+
+        public IActionResult Index()
+        {
+            return View(_userManager.Users);
+        }
+
+        [HttpGet]
+        public IActionResult Create()
+        {
+            return View(new UserCreateViewModel(_roleManager.Roles.ToList()));
+        }
+
+        [HttpPost]
+        public async Task<IActionResult> Create(UserCreateViewModel model)
+        {
+            if (ModelState.IsValid)
+            {
+                var newUser = new User
+                {
+                    UserName = model.Username,
+                    Email = model.Email
+                };
+
+                var result = await _userManager.CreateAsync(newUser, model.Password);
+
+                if (result.Succeeded)
+                    return RedirectToAction("Index");
+
+                foreach (var error in result.Errors)
+                {
+                    ModelState.AddModelError("", error.Description);
+                }
+            }
+
+            return View(model);
+        }
+    }
+}

webinar65/Models/User.cs

+using System.Collections.Generic;
 using Microsoft.AspNetCore.Identity;
 
 namespace webinar65.Models

webinar65/ViewModels/UserCreateViewModel.cs

 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using Microsoft.AspNetCore.Identity;
+using Microsoft.AspNetCore.Mvc.Rendering;
 using webinar65.Models;
 
 namespace webinar65.ViewModels
@@ -16,6 +18,23 @@ namespace webinar65.ViewModels
         [Required]
         public string Password { get; set; }
 
-        public List<IdentityRole> Roles { get; set; }
+        [Required]
+        public string RoleName { get; set; }
+
+        public List<SelectListItem> Roles { get; set; }
+
+        public UserCreateViewModel()
+        {
+
+        }
+
+        public UserCreateViewModel(List<IdentityRole> roles)
+        {
+            Roles = roles.Select(r => new SelectListItem
+            {
+                Text = r.Name,
+                Value = r.Name
+            }).ToList();
+        }
     }
 }

webinar65/Views/Shared/_Layout.cshtml

@@ -31,6 +31,7 @@
             <div class="navbar-collapse collapse">
                 <ul class="nav navbar-nav">
                     <li><a asp-area="" asp-controller="Role" asp-action="Index">Roles</a></li>
+                    <li><a asp-area="" asp-controller="User" asp-action="Index">Users</a></li>
                     <li><a asp-area="" asp-controller="Home" asp-action="Index">Home</a></li>
                     <li><a asp-area="" asp-controller="Home" asp-action="About">About</a></li>
                     <li><a asp-area="" asp-controller="Home" asp-action="Contact">Contact</a></li>

webinar65/Views/User/Create.cshtml

+@model webinar65.ViewModels.UserCreateViewModel
+
+@{
+    ViewBag.Title = "Create User";
+    Layout = "_Layout";
+}
+
+<h2>Create User</h2>
+
+<div asp-validation-summary="All" class="text-danger"></div>
+
+<form asp-action="Create" method="post">
+    <div class="form-group">
+        <label asp-for="Email">Email</label>
+        <input asp-for="Email" class="form-control"/>
+    </div>
+    <div class="form-group">
+        <label asp-for="Username">Username</label>
+        <input asp-for="Username" class="form-control"/>
+    </div>
+
+    <div class="form-group">
+        <label asp-for="Password">Password</label>
+        <input asp-for="Password" class="form-control"/>
+    </div>
+
+    <div class="form-group">
+        <label asp-for="RoleName">RoleName</label>
+        <select asp-for="RoleName" asp-items="@Model.Roles"></select>
+    </div>
+
+    <button type="submit" class="btn btn-primary">Create</button>
+    <a asp-action="Index" class="btn btn-secondary">Cancel</a>
+</form>

webinar65/Views/User/Index.cshtml

+@model IEnumerable<webinar65.Models.User>
+
+@{
+    ViewBag.Title = "Users";
+    Layout = "_Layout";
+}
+
+<h2>Users</h2>
+
+<table class="table">
+    <thead>
+    <tr>
+        <th scope="col">ID</th>
+        <th scope="col">User name</th>
+        <th scope="col">Email</th>
+    </tr>
+    </thead>
+    <tbody>
+    @if (!Model.Any())
+    {
+        <tr>
+            <td colspan="3" class="text-center">No Users</td>
+        </tr>
+    }
+    else
+    {
+        foreach (User user in Model)
+        {
+            <tr>
+                <td>@user.Id</td>
+                <td>@user.UserName</td>
+                <td>@user.Email</td>
+            </tr>
+        }
+    }
+    </tbody>
+</table>
+
+<a asp-action="Create" class="btn btn-primary">Create</a>