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MembershipUser.ChangePasswordQuestionAndAnswer Method

Updates the password question and answer for the membership user in the membership data store.

Namespace:  System.Web.Security
Assembly:  System.Web (in System.Web.dll)

public virtual bool ChangePasswordQuestionAndAnswer(
	string password,
	string newPasswordQuestion,
	string newPasswordAnswer
)

Parameters

password
Type: System.String

The current password for the membership user.

newPasswordQuestion
Type: System.String

The new password question value for the membership user.

newPasswordAnswer
Type: System.String

The new password answer value for the membership user.

Return Value

Type: System.Boolean
true if the update was successful; otherwise, false.

ExceptionCondition
System.ArgumentException

password is an empty string.

-or-

newPasswordQuestion is an empty string.

-or-

newPasswordAnswer is an empty string.

System.ArgumentNullException

password is null.

ChangePasswordQuestionAndAnswer calls the ChangePasswordQuestionAndAnswer method of the membership provider referenced by the ProviderName property to update the password question and answer for the membership user in the membership data store.

The membership provider may have restrictions on the size of the password question and answer. For size limitations, see the documentation for the membership provider.

The following code example updates the password question and answer for the current logged-on user.

Security noteSecurity Note:

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.

<%@ 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">

  public void ChangePasswordQuestion_OnClick(object sender, EventArgs args)
  {
    try
    {
      MembershipUser u = Membership.GetUser(User.Identity.Name);
      Boolean result = u.ChangePasswordQuestionAndAnswer(PasswordTextbox.Text,
                                        QuestionTextbox.Text,
                                        AnswerTextbox.Text);

      if (result)
        Msg.Text = "Password Question and Answer changed.";
      else
        Msg.Text = "Password Question and Answer change failed.";
    }
    catch (Exception e)
    {
      Msg.Text = "Change failed. Please re-enter your values and try again.";
    }
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
  <title>Sample: Change Password Question and Answer</title>
</head>
<body>
  <form id="form1" runat="server">
    <h3>
      Change Password Question and Answer for
      <%=User.Identity.Name%>
    </h3>
    <asp:Label ID="Msg" ForeColor="maroon" runat="server" /><br />
    <table cellpadding="3" border="0">
      <tr>
        <td>
          Password:</td>
        <td>
          <asp:TextBox ID="PasswordTextbox" runat="server" TextMode="Password" /></td>
        <td>
          <asp:RequiredFieldValidator ID="OldPasswordRequiredValidator" runat="server" ControlToValidate="PasswordTextbox"
            ForeColor="red" Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>
          New Password Question:</td>
        <td>
          <asp:TextBox ID="QuestionTextbox" MaxLength="256" Columns="60" runat="server" /></td>
        <td>
          <asp:RequiredFieldValidator ID="QuestionRequiredValidator" runat="server" ControlToValidate="QuestionTextbox"
            ForeColor="red" Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>
          New Password Answer:</td>
        <td>
          <asp:TextBox ID="AnswerTextbox" MaxLength="128" Columns="60" runat="server" /></td>
        <td>
          <asp:RequiredFieldValidator ID="AnswerRequiredValidator" runat="server" ControlToValidate="AnswerTextbox"
            ForeColor="red" Display="Static" ErrorMessage="Required" /></td>
      </tr>
      <tr>
        <td>
        </td>
        <td>
          <asp:Button ID="ChangePasswordQuestionButton" Text="Change Password Question and Answer"
            OnClick="ChangePasswordQuestion_OnClick" runat="server" /></td>
      </tr>
    </table>
  </form>
</body>
</html>

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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