View page that using RoleManager

How to rendering Role model in View Page?

My Controller works good.

        // POST: /Roles/Create
        [HttpPost]
        public async Task<IActionResult> Create(IdentityRole roleViewModel)
        {
            if (ModelState.IsValid)
            {



                if (!_roleManager.RoleExistsAsync("Admin").Result)
                {
                    var newRole = new Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole();
                    newRole = roleViewModel;

                    // newRole.Name = "Admin";
                    await _roleManager.CreateAsync(newRole);
                }


            }
            return View();
        }

But, My View can't get "Name" Property.

@model IEnumerable<Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole>


@{
    ViewData["Title"] = "Create";
}<h2>Create</h2><form asp-action="Create"><div class="form-horizontal"><h4>Role</h4><hr /><div asp-validation-summary="ModelOnly" class="text-danger"></div><div class="form-group"><label asp-for="Name" class="col-md-2 control-label"></label><div class="col-md-10"><input asp-for="Name" class="form-control" /><span asp-validation-for="Name" class="text-danger"></span></div></div><div class="form-group"><div class="col-md-offset-2 col-md-10"><input type="submit" value="Create" class="btn btn-default" /></div></div></div></form><div><a asp-action="Index">Back to List</a></div>

@section Scripts {
    @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}

The erros message is

"

'IEnumerable<IdentityRole>' does not contain a definition for 'Name' and no extension method 'Name' accepting a first argument of type 'IEnumerable<IdentityRole>' could be found (are you missing a using directive or an assembly reference?)"

So I suppose the View can't fetch RoleManaer's Model.

Did anybody ever have solved this issue?

p.s> The index view works good with Model

@model IEnumerable<Microsoft.AspNetCore.Identity.EntityFrameworkCore.IdentityRole>
@{
    ViewData["Title"] = "Index";
}<h2>Index</h2><table class="table"><thead><tr><th>
                @Html.DisplayNameFor(model => model.Name)</th><th></th></tr></thead><tbody>
        @foreach (var item in Model)
        {<tr><td>
                    @Html.DisplayFor(modelItem => item.Name)</td><td><a asp-action="Edit" asp-route-id="@item.Id">Edit</a> |<a asp-action="Details" asp-route-id="@item.Id">Details</a> |<a asp-action="Delete" asp-route-id="@item.Id">Delete</a></td></tr>
        }</tbody></table><p><a asp-action="Create">New</a></p>