MembershipUser.PasswordQuestion 属性

参考

定义

命名空间:: System.Web.Security

程序集:: System.Web.dll

程序集:: System.Web.ApplicationServices.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取成员资格用户的密码问题。

public:
 virtual property System::String ^ PasswordQuestion { System::String ^ get(); };

public virtual string PasswordQuestion { get; }

member this.PasswordQuestion : string

Public Overridable ReadOnly Property PasswordQuestion As String

属性值

String

成员资格用户的密码问题。

示例

下面的代码示例重置用户的密码（如果用户提供相应的密码答案）。 PasswordQuestion用户的将显示为提醒用户密码答案。

重要

此示例包含一个接受用户输入的文本框，这是一个潜在的安全威胁。默认情况下，ASP.NET 网页验证用户输入是否不包含脚本或 HTML 元素。有关详细信息，请参阅脚本侵入概述。

<%@ 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">

MembershipUser u;

public void Page_Load(object sender, EventArgs args)
{
  if (!Membership.EnablePasswordReset)
  {
    FormsAuthentication.RedirectToLoginPage();
  }

  Msg.Text = "";

  if (!IsPostBack)
  {
    Msg.Text = "Please supply a username.";
  }
  else
  {
    VerifyUsername();
  }
}


public void VerifyUsername()
{
    u = Membership.GetUser(UsernameTextBox.Text, false);

    if (u == null)
    {
      Msg.Text = "Username " + Server.HtmlEncode(UsernameTextBox.Text) + " not found. Please check the value and re-enter.";

      QuestionLabel.Text = "";
      QuestionLabel.Enabled = false;
      AnswerTextBox.Enabled = false;
      ResetPasswordButton.Enabled = false;
    }
    else
    {
      QuestionLabel.Text = u.PasswordQuestion;
      QuestionLabel.Enabled = true;
      AnswerTextBox.Enabled = true;
      ResetPasswordButton.Enabled = true;
    }
}

public void ResetPassword_OnClick(object sender, EventArgs args)
{
  string newPassword;
  u = Membership.GetUser(UsernameTextBox.Text, false);

  if (u == null)
  { 
    Msg.Text = "Username " + Server.HtmlEncode(UsernameTextBox.Text) + " not found. Please check the value and re-enter.";
    return;
  }

  try
  {
    newPassword = u.ResetPassword(AnswerTextBox.Text);
  }
  catch (MembershipPasswordException e)
  {
    Msg.Text = "Invalid password answer. Please re-enter and try again.";
    return;
  }
  catch (Exception e)
  {
    Msg.Text = e.Message;
    return;
  }

  if (newPassword != null)
  {
    Msg.Text = "Password reset. Your new password is: " + Server.HtmlEncode(newPassword);
  }
  else
  {
    Msg.Text = "Password reset failed. Please re-enter your values and try again.";
  }
}


</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Reset Password</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Retrieve Password</h3>

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

  Username: <asp:Textbox id="UsernameTextBox" Columns="30" runat="server" AutoPostBack="true" />
            <asp:RequiredFieldValidator id="UsernameRequiredValidator" runat="server"
                                        ControlToValidate="UsernameTextBox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /><br />

  Password Question: <b><asp:Label id="QuestionLabel" runat="server" /></b><br />

  Answer: <asp:TextBox id="AnswerTextBox" Columns="60" runat="server" Enabled="false" />
          <asp:RequiredFieldValidator id="AnswerRequiredValidator" runat="server"
                                      ControlToValidate="AnswerTextBox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" Enabled="false" /><br />

  <asp:Button id="ResetPasswordButton" Text="Reset Password" 
              OnClick="ResetPassword_OnClick" runat="server" Enabled="false" />

</form>

</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 u As MembershipUser

Public Sub Page_Load(sender As Object, args As EventArgs)
  If Not Membership.EnablePasswordReset Then
    FormsAuthentication.RedirectToLoginPage()
  End If

  Msg.Text = ""

  If Not IsPostBack Then
    Msg.Text = "Please supply a username."
  Else
    VerifyUsername()
  End If
End Sub

Public Sub VerifyUsername()
    u = Membership.GetUser(UsernameTextBox.Text, False)

    If u Is Nothing Then
      Msg.Text = "Username " & Server.HtmlEncode(UsernameTextBox.Text) & " not found. Please check the value and re-enter."

      QuestionLabel.Text = ""
      QuestionLabel.Enabled = False
      AnswerTextBox.Enabled = False
      ResetPasswordButton.Enabled = False
    Else
      QuestionLabel.Text = u.PasswordQuestion
      QuestionLabel.Enabled = True
      AnswerTextBox.Enabled = True
      ResetPasswordButton.Enabled = True
    End If
End Sub

Public Sub ResetPassword_OnClick(sender As Object, args As EventArgs)
  Dim newPassword As String
  u = Membership.GetUser(UsernameTextBox.Text, False)

  If u Is Nothing Then
    Msg.Text = "Username " & Server.HtmlEncode(UsernameTextBox.Text) & " not found. Please check the value and re-enter."
    Return
  End If

  Try
    newPassword = u.ResetPassword(AnswerTextBox.Text)
  Catch e As MembershipPasswordException
    Msg.Text = "Invalid password answer. Please re-enter and try again."
    Return
  Catch e As Exception
    Msg.Text = e.Message
    Return
  End Try

  If Not newPassword Is Nothing Then
    Msg.Text = "Password reset. Your new password is: " & Server.HtmlEncode(newPassword)
  Else
    Msg.Text = "Password reset failed. Please re-enter your values and try again."
  End If
End Sub


</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: Reset Password</title>
</head>
<body>

<form id="form1" runat="server">
  <h3>Retrieve Password</h3>

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

  Username: <asp:Textbox id="UsernameTextBox" Columns="30" runat="server" AutoPostBack="True" />
            <asp:RequiredFieldValidator id="UsernameRequiredValidator" runat="server"
                                        ControlToValidate="UsernameTextBox" ForeColor="red"
                                        Display="Static" ErrorMessage="Required" /><br />

  Password Question: <b><asp:Label id="QuestionLabel" runat="server" /></b><br />

  Answer: <asp:TextBox id="AnswerTextBox" Columns="60" runat="server" Enabled="False" />
          <asp:RequiredFieldValidator id="AnswerRequiredValidator" runat="server"
                                      ControlToValidate="AnswerTextBox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" Enabled="False" /><br />

  <asp:Button id="ResetPasswordButton" Text="Reset Password" 
              OnClick="ResetPassword_OnClick" runat="server" Enabled="False" />

</form>

</body>
</html>

注解

如果 RequiresQuestionAndAnswer 为 true，则必须向和 ResetPassword 方法提供GetPassword成员身份用户的密码答案。提醒 PasswordQuestion 成员身份用户其密码答案是什么。成员身份用户提供密码答案后，可将答案值提供给 GetPassword 或 ResetPassword 方法。

适用于

另请参阅

ASP.NET 成员资格简介

通过

MembershipUser.PasswordQuestion 属性

定义

属性值

示例

注解

适用于

另请参阅

其他资源