Le status de mon LoginStatus réste invariable

Bonjour,

la configuration de mon LoginView est comme ceci:

Code:

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<asp:LoginView ID="HeadLoginView" runat="server">
                    <AnonymousTemplate>
                        [ <a href="~/Account/Login.aspx" ID="HeadLoginStatus" runat="server">Se connecter</a> ]
                    </AnonymousTemplate>
                    <LoggedInTemplate>
                        Bienvenue <span class="bold"><asp:LoginName ID="HeadLoginName" runat="server" /></span>!
                        [ <asp:LoginStatus ID="HeadLoginStatus" runat="server" LogoutAction="RedirectToLoginPage"  LogoutText="Se déconnecter" LogoutPageUrl="~/Account/Login.aspx"/> ]
                    </LoggedInTemplate>
                </asp:LoginView>

est j'ai crée dans le code behind de la page Login ce code :

Code:

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Protected Sub Login1_Authenticate(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.AuthenticateEventArgs) Handles LoginUser.Authenticate
        Dim username As String
        Dim pwd As String
        Dim pName As String
 
        username = LoginUser.UserName
        pwd = LoginUser.Password
        pName = ""
        Dim strConn As String
        strConn = WebConfigurationManager.ConnectionStrings("basedossierConnectionString").ConnectionString
        Dim Conn As New SqlConnection(strConn)
        Conn.Open()
        Dim sqlUserName As String
        sqlUserName = "SELECT username, password FROM dbo.utilisateur"
        sqlUserName &= " WHERE (username = @UserName"
        sqlUserName &= " AND password = @Password)"
 
        Dim com As New SqlCommand(sqlUserName, Conn)
        com.Parameters.AddWithValue("@UserName", username)
        com.Parameters.AddWithValue("@Password", pwd)
 
        Dim CurrentName As String
        CurrentName = CStr(com.ExecuteScalar)
 
        If CurrentName <> "" Then
            Session("UserAuthentication") = username
 
            Response.Redirect("Nouveau.aspx")
        Else
            Session("UserAuthentication") = ""
        End If
 
    End Sub

Je me connecte et il me dirige vers la page voulue mais le status se connecter reste la même dans le head de la page .
Merci de me fournir d'aide sur le problème .