MembershipUser.LastPasswordChangedDate Proprietà

Riferimento

Definizione

Spazio dei nomi:: System.Web.Security

Assembly:: System.Web.dll

Assembly:: System.Web.ApplicationServices.dll

Importante

Alcune informazioni sono relative alla release non definitiva del prodotto, che potrebbe subire modifiche significative prima della release definitiva. Microsoft non riconosce alcuna garanzia, espressa o implicita, in merito alle informazioni qui fornite.

Ottiene la data e l'ora dell'ultimo aggiornamento della password dell'utente di appartenenza.

public:
 virtual property DateTime LastPasswordChangedDate { DateTime get(); };

public virtual DateTime LastPasswordChangedDate { get; }

member this.LastPasswordChangedDate : DateTime

Public Overridable ReadOnly Property LastPasswordChangedDate As DateTime

Valore della proprietà

DateTime

Data e ora dell'ultimo aggiornamento della password dell'utente di appartenenza.

Esempio

L'esempio di codice seguente mostra una pagina di accesso che indica che una password è scaduta dopo un numero specificato di giorni. Se è LastPasswordChangedDate precedente alla data e all'ora correnti meno il numero di giorni specificati per la scadenza di una password, l'utente viene indirizzato a modificare la password.

Importante

Questo esempio contiene una casella di testo che accetta l'input dell'utente, che rappresenta una potenziale minaccia per la sicurezza. Per impostazione predefinita, le pagine Web ASP.NET verificano che l'input dell'utente non includa script o elementi HTML. Per altre informazioni, vedere Cenni preliminari sugli attacchi tramite script.

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

double passwordExpiresDays = 90;

public void Login_OnClick(object sender, EventArgs args)
{
   MembershipUser u = Membership.GetUser(UsernameTextbox.Text);

   if (u == null)
   {
     Msg.Text = "Invalid user name. Please check your user name and try again.";
     return;
   }

   if (Membership.ValidateUser(UsernameTextbox.Text, PasswordTextbox.Text))
   {
      if (u.LastPasswordChangedDate.AddDays(passwordExpiresDays) < DateTime.Now)
      {
        Msg.Text = "Your password has expired. Please change your password to a new value.";
        UsernameLabel.Text = UsernameTextbox.Text;
        ChangePasswordPanel.Visible = true;
        LoginPanel.Visible = false;
      }
      else
      {
        FormsAuthentication.RedirectFromLoginPage(UsernameTextbox.Text, NotPublicCheckBox.Checked);
      }
   }
   else
   {
     Msg.Text = "Invalid password. Please check your password and try again.";
   }
}

public void ChangePassword_OnClick(object sender, EventArgs args)
{
  // Update the password.

  MembershipUser u = Membership.GetUser(UsernameLabel.Text);

  if (u.ChangePassword(OldPasswordTextbox.Text, NewPasswordTextbox.Text))
  {
    Msg.Text = "Password changed.";
    ChangePasswordPanel.Visible = false;
    LoginPanel.Visible = true;
  }
  else
  {
    Msg.Text = "Password change failed. Please re-enter your values and try again.";
  }
}

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
  <title>Login</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Login</h3>

  <asp:Label id="Msg" ForeColor="maroon" runat="server" /><br />

  <asp:Panel id="LoginPanel" runat="Server">

    Username: <asp:Textbox id="UsernameTextbox" runat="server" /><br />
    Password: <asp:Textbox id="PasswordTextbox" runat="server" TextMode="Password" /><br />
 
    <asp:Button id="LoginButton" Text="Login" OnClick="Login_OnClick" runat="server" />
    <asp:CheckBox id="NotPublicCheckBox" runat="server" /> Check here if this is <span style="text-decoration:underline">not</span> a public computer.

  </asp:Panel>

  <asp:Panel id="ChangePasswordPanel" runat="Server" Visible="False">
    <table cellpadding="3" border="0">
      <tr>
        <td>Username:</td>
        <td><b><asp:Label id="UsernameLabel" runat="server" /></b></td>
        <td></td>
      </tr>
      <tr>
        <td>Old Password:</td>
        <td><asp:Textbox id="OldPasswordTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="OldPasswordRequiredValidator" runat="server"
                                        ControlToValidate="OldPasswordTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>Password:</td>
        <td><asp:Textbox id="NewPasswordTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="PasswordRequiredValidator" runat="server"
                                        ControlToValidate="NewPasswordTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>Confirm Password:</td>
        <td><asp:Textbox id="PasswordConfirmTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="PasswordConfirmRequiredValidator" runat="server"
                                        ControlToValidate="PasswordConfirmTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" />
            <asp:CompareValidator id="PasswordConfirmCompareValidator" runat="server"
                                        ControlToValidate="PasswordConfirmTextbox" ForeColor="red"
                                        Display="Static" ControlToCompare="PasswordTextBox"
                                        ErrorMessage="Confirm password must match password." />
        </td>
      </tr>
      <tr>
        <td></td>
        <td><asp:Button id="ChangePasswordButton" Text="Change Password" 
                        OnClick="ChangePassword_OnClick" runat="server" /></td>
      </tr>
    </table>
  </asp:Panel>

</form>
<br />

</body>
</html>

<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

Dim passwordExpiresDays As Double = 90

Public Sub Login_OnClick(sender As Object, args As EventArgs)

   Dim u As MembershipUser = Membership.GetUser(UsernameTextbox.Text)

   If u Is Nothing Then
     Msg.Text = "Invalid user name. Please check your user name and try again."
     Return
   End If

   If Membership.ValidateUser(UsernameTextbox.Text, PasswordTextbox.Text) Then
      If u.LastPasswordChangedDate.AddDays(passwordExpiresDays) < DateTime.Now Then
        Msg.Text = "Your password has expired. Please change your password to a new value."
        UsernameLabel.Text = UsernameTextbox.Text
        ChangePasswordPanel.Visible = True
        LoginPanel.Visible = False
      Else
        FormsAuthentication.RedirectFromLoginPage(UsernameTextbox.Text, NotPublicCheckBox.Checked)
      End If
   Else
     Msg.Text = "Invalid password. Please check your password and try again."
   End If
End Sub

Public Sub ChangePassword_OnClick(sender As Object, args As EventArgs)

  ' Update the password.

  Dim u As MembershipUser = Membership.GetUser(UsernameLabel.Text)

  If u.ChangePassword(OldPasswordTextbox.Text, NewPasswordTextbox.Text) Then
    Msg.Text = "Password changed."
    ChangePasswordPanel.Visible = False
    LoginPanel.Visible = True
  Else
    Msg.Text = "Password change failed. Please re-enter your values and try again."
  End If
End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
  <title>Login</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Login</h3>

  <asp:Label id="Msg" ForeColor="maroon" runat="server" /><br />

  <asp:Panel id="LoginPanel" runat="Server">

    Username: <asp:Textbox id="UsernameTextbox" runat="server" /><br />
    Password: <asp:Textbox id="PasswordTextbox" runat="server" TextMode="Password" /><br />
 
    <asp:Button id="LoginButton" Text="Login" OnClick="Login_OnClick" runat="server" />
    <asp:CheckBox id="NotPublicCheckBox" runat="server" /> Check here if this is <span style="text-decoration:underline">not</span> a public computer.

  </asp:Panel>

  <asp:Panel id="ChangePasswordPanel" runat="Server" Visible="False">
    <table cellpadding="3" border="0">
      <tr>
        <td>Username:</td>
        <td><b><asp:Label id="UsernameLabel" runat="server" /></b></td>
        <td></td>
      </tr>
      <tr>
        <td>Old Password:</td>
        <td><asp:Textbox id="OldPasswordTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="OldPasswordRequiredValidator" runat="server"
                                        ControlToValidate="OldPasswordTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>Password:</td>
        <td><asp:Textbox id="NewPasswordTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="PasswordRequiredValidator" runat="server"
                                        ControlToValidate="NewPasswordTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>Confirm Password:</td>
        <td><asp:Textbox id="PasswordConfirmTextbox" runat="server" TextMode="Password" /></td>
        <td><asp:RequiredFieldValidator id="PasswordConfirmRequiredValidator" runat="server"
                                        ControlToValidate="PasswordConfirmTextbox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" />
            <asp:CompareValidator id="PasswordConfirmCompareValidator" runat="server"
                                        ControlToValidate="PasswordConfirmTextbox" ForeColor="red"
                                        Display="Static" ControlToCompare="PasswordTextBox"
                                        ErrorMessage="Confirm password must match password." />
        </td>
      </tr>
      <tr>
        <td></td>
        <td><asp:Button id="ChangePasswordButton" Text="Change Password" 
                        OnClick="ChangePassword_OnClick" runat="server" /></td>
      </tr>
    </table>
  </asp:Panel>

</form>
<br />

</body>
</html>

Commenti

Imposta SqlMembershipProvider la CreationDatedata , LastLoginDate, LastActivityDatee LastPasswordChangedDate sulla stessa data e ora in cui un utente di appartenenza viene creato dal CreateUser metodo .

Si applica a

Vedi anche

Introduzione all'appartenenza a ASP.NET

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