问注册与.NET核心标识名字段错误-“用户名‘是无效的，只能包含字母或数字。”

EN

    services.Configure<IdentityOptions>(options =>
                {
                    options.User.AllowedUserNameCharacters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._@+";
    }

    [HttpPost]
    public async Task<IActionResult> Register(RegisterViewModel model)
    {
        if (ModelState.IsValid)
        {
            var user = new ApplicationUser
            {
                Name = model.Name,                    
                Email = model.Email
            };  
    
            var result = await _userManager.CreateAsync(user, model.Password);
    
            if (result.Succeeded)
            {
                await _signInManager.SignInAsync(user, isPersistent: false);
    
                return RedirectToAction("index", "Home");
            }
    
            foreach (var error in result.Errors)
            {
                ModelState.AddModelError("", error.Description);
            }
    
            ModelState.AddModelError(string.Empty, "Invalid Login Attempt");
        }
    
        return View(model);
    }

    <form method="post">
                <div asp-validation-summary="All" class="text-danger"></div>
                <div class="form-group">
                    <label asp-for="Name"></label>
                    <input asp-for="Name" class="form-control" />
                    <span asp-validation-for="Name" class="text-danger"></span>
                </div>
    
    
                <div class="form-group">
                    <label asp-for="Email"></label>
                    <input asp-for="Email" class="form-control" />
                    <span asp-validation-for="Email" class="text-danger"></span>
                </div>
    
                <div class="form-group">
                    <label asp-for="Password"></label>
                    <input asp-for="Password" class="form-control" />
                    <span asp-validation-for="Password" class="text-danger"></span>
                </div>
    
                <div class="form-group">
                    <label asp-for="ConfirmPassword"></label>
                    <input asp-for="ConfirmPassword" class="form-control" />
                    <span asp-validation-for="ConfirmPassword" class="text-danger"></span>
                </div>
                <button type="submit" class="btn-primary">Register</button>
    
    
            </form>

My appDBContext:

    public class AppDBContext : IdentityDbContext<ApplicationUser>
    {
        private readonly DbContextOptions _options;

        public AppDBContext()
        {

        }

        public AppDBContext(DbContextOptions options): base(options)
        {
            _options = options;
        }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            if (!optionsBuilder.IsConfigured)
            {
                optionsBuilder.UseSqlServer(
                @"Server=(localdb)\mssqllocaldb;Database=Codefirst");
            }
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            modelBuilder.Entity<ApplicationUser>()
            .Property(e => e.Name)
            .HasMaxLength(250);

            modelBuilder.Entity<ApplicationUser>()
            .Property(e => e.Email)
            .HasMaxLength(250);
        }
    }

My applicationuser.cs class:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Identity;

namespace SLE_System.Data
{
    public class ApplicationUser : IdentityUser
    {
        public string Name { get; set; }

        public string Email { get; set; }

        public string Password { get; set; }

        public string ConfirmPassword { get; set; }
    }
}

If anyone has any ideas, these would be much appreciated?

Thanks,

Robert