MembershipUser.LastPasswordChangedDate Property
Assembly: System.Web (in system.web.dll)
'Declaration Public Overridable ReadOnly Property LastPasswordChangedDate As DateTime 'Usage Dim instance As MembershipUser Dim value As DateTime value = instance.LastPasswordChangedDate
/** @property */ public DateTime get_LastPasswordChangedDate ()
public function get LastPasswordChangedDate () : DateTime
Not applicable.
Property Value
The date and time when the membership user's password was last updated.The SqlMembershipProvider sets the CreationDate, LastLoginDate, LastActivityDate, and LastPasswordChangedDate date to the same date and time when a membership user is created by the CreateUser method.
The following code example shows a login page that indicates a password has expired after a specified number of days. If the LastPasswordChangedDate is earlier than the current date and time minus the number of days specified for the expiration of a password, then the user is directed to change his or her password.
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This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview (Visual Studio). |
<%@ 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>
Security Note: