Why blinding doesn't work in Blazor form?

I am a beginner at Blazor. It's my first project using VS22 Blazor project Server side and I have this code in my page Home.razor :

@page "/"@using WebReporting.Kernel@using WebReporting.Components.Base@inject UserAccess CurrentUser<PageTitle>Page d'accueil</PageTitle><div><!--  Model.Message--></div>@if (!CurrentUser.IsInRole(TUser.AccessRights.User.ToString()) && !CurrentUser.IsInRole(TUser.AccessRights.Admin.ToString())){<EditForm Model="UserCred" FormName="Login" OnValidSubmit="@Login"><div class="form-group"><label for="userName" class="col-form-label col-md-2">Nom d'utilisateur</label><div class="col-md-10"><InputText id="userName" @bind-Value="UserCred.UserName" /></div></div><div class="form-group"><label for="password" class=" col-form-label col-md-2">Mot de passe</label><div class="col-md-10"><InputText id="password" @bind-Value="UserCred.Password" type="password" /></div></div><br /><button type="submit" class="btn btn-primary btn-sm">Connexion</button></EditForm>}else if (CurrentUser.User != null && CurrentUser.User.Identity != null){...}

Then in Home.razor.cs :

namespace WebReporting.Components.Pages;using System.Security.Claims;using Microsoft.AspNetCore.Authentication;using Microsoft.AspNetCore.Authentication.Cookies;using Microsoft.AspNetCore.Components;public partial class Home{  [Inject]  private ILogger<Home>? _logger { get; set; }  [Inject]  private NavigationManager? _navigationManager { get; set; }  [Inject]  private IHttpContextAccessor? _httpContextAccessor { get; set; }  public UserId UserCred { get; set; } = new UserId();  public string? Message { get; set; }  public async Task Login()  {    try    {      _logger!.LogInformation($"Login : {UserCred.UserName}, {UserCred.Password}");      // Vérifier si un nom d'utilisateur et un mot de passe ont été fournis      if (!string.IsNullOrEmpty(UserCred.UserName) && !string.IsNullOrEmpty(UserCred.Password))      {        // Recherche d'un utilisateur correspondant dans la base de données        using DBInterface dbManager = new();        TUser? dbUser = dbManager.GetAllUsers().FirstOrDefault(u => string.Compare(UserCred.UserName, u.Name, true) == 0);        // Vérification du mot de passe        if (dbUser != null && Simple3Des.DecryptString(dbUser.PasswordHash) == UserCred.Password)        {          _logger!.LogInformation("Login de l'utilisateur {user}", dbUser.Name);          List<Claim> claims =          [            new(ClaimTypes.Name, UserCred.UserName),            new(ClaimTypes.Role, dbUser.AccessLevelEnu.ToString())          ];          ClaimsIdentity claimsIdentity = new(claims, CookieAuthenticationDefaults.AuthenticationScheme);          AuthenticationProperties authProperties = new()          {            AllowRefresh = true,            IsPersistent = true,          };          _httpContextAccessor!.HttpContext!.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(claimsIdentity), authProperties).Wait();          _navigationManager!.NavigateTo("/");        }      }    }    catch (Exception ex)    {      _logger!.LogError("Erreur dans {methodName} : {exceptionType} : {exceptionMessage}", $"{nameof(Home)}.{nameof(Login)}", ex.GetType().Name, ex.Message);      throw;    }    Message = $"Nom d'utilisateur ou mot de passe invalide !";    _navigationManager!.NavigateTo("/");  }}public class UserId{  public string UserName { get; set; } = "";  public string Password { get; set; } = "";}

The Login function is called but UserCred.User and UserCred.Password are empty (not null).I don't understand why the binding (field userName and password) doesn't work.

If I check in my browser debugger, I get a POST message with the correct data for UserName and Password.

Can someone help me, pls?