Membership.GeneratePassword(Int32, Int32) Membership.GeneratePassword(Int32, Int32) Membership.GeneratePassword(Int32, Int32) Membership.GeneratePassword(Int32, Int32) Method

Definición

Genera una contraseña aleatoria de la longitud especificada.Generates a random password of the specified length.

public:
 static System::String ^ GeneratePassword(int length, int numberOfNonAlphanumericCharacters);
public static string GeneratePassword (int length, int numberOfNonAlphanumericCharacters);
static member GeneratePassword : int * int -> string
Public Shared Function GeneratePassword (length As Integer, numberOfNonAlphanumericCharacters As Integer) As String

Parámetros

length
Int32 Int32 Int32 Int32

Número de caracteres de la contraseña generada.The number of characters in the generated password. La longitud debe estar entre 1 y 128 caracteres.The length must be between 1 and 128 characters.

numberOfNonAlphanumericCharacters
Int32 Int32 Int32 Int32

Número mínimo de caracteres no alfanuméricos (como @, #, !, %, &, etc.) en la contraseña generada.The minimum number of non-alphanumeric characters (such as @, #, !, %, &, and so on) in the generated password.

Devoluciones

Contraseña aleatoria de la longitud especificada.A random password of the specified length.

Excepciones

length es menor que 1 o mayor que 128 olength is less than 1 or greater than 128 -or- numberOfNonAlphanumericCharacters es menor que 0 o mayor que length.numberOfNonAlphanumericCharacters is less than 0 or greater than length.

Ejemplos

En el ejemplo de código siguiente se crea un nuevo usuario de pertenencia y usa el GeneratePassword método para inicializar la contraseña para el nuevo usuario a un valor aleatorio que se muestra al usuario.The following code example creates a new membership user and uses the GeneratePassword method to initialize the password for the new user to a random value, which is displayed to the user.

Importante

En este ejemplo contiene un cuadro de texto que acepta datos proporcionados por el usuario, que puede suponer una amenaza de seguridad.This example contains a text box that accepts user input, which is a potential security threat. De forma predeterminada, ASP.NET Web Pages valida que los datos proporcionados por el usuario no incluyen elementos HTML ni de script.By default, ASP.NET Web pages validate that user input does not include script or HTML elements. Para más información, consulte Información general sobre los ataques mediante scripts.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 CreateUser_OnClick(object sender, EventArgs args)
{
  // Generate a new 12-character password with at least 1 non-alphanumeric character.
  string password = Membership.GeneratePassword(12, 1);

  try
  {
    // Create new user.
    MembershipUser newUser = Membership.CreateUser(UsernameTextbox.Text, password, 
                                                   EmailTextbox.Text);

    Msg.Text = "User <b>" + Server.HtmlEncode(UsernameTextbox.Text) + "</b> created. " +
               "Your temporary password is " + password + ".";
  }
  catch (MembershipCreateUserException e)
  {
    Msg.Text = GetErrorMessage(e.StatusCode);
  }
  catch (HttpException e)
  {
    Msg.Text = e.Message;
  }
}

public string GetErrorMessage(MembershipCreateStatus status)
{
   switch (status)
   {
      case MembershipCreateStatus.DuplicateUserName:
        return "Username already exists. Please enter a different user name.";

      case MembershipCreateStatus.DuplicateEmail:
        return "A username for that email address already exists. Please enter a different email address.";

      case MembershipCreateStatus.InvalidPassword:
        return "The password provided is invalid. Please enter a valid password value.";

      case MembershipCreateStatus.InvalidEmail:
        return "The email address provided is invalid. Please check the value and try again.";

      case MembershipCreateStatus.InvalidAnswer:
        return "The password retrieval answer provided is invalid. Please check the value and try again.";

      case MembershipCreateStatus.InvalidQuestion:
        return "The password retrieval question provided is invalid. Please check the value and try again.";

      case MembershipCreateStatus.ProviderError:
        return "The authentication provider returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

      case MembershipCreateStatus.UserRejected:
        return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator.";

      default:
        return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator.";
   }
}

</script>

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

<form id="form1" runat="server">
  <h3>Create New User</h3>

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

  <table cellpadding="3" border="0">
    <tr>
      <td>Username:</td>
      <td><asp:Textbox id="UsernameTextbox" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="UsernameRequiredValidator" runat="server"
                                      ControlToValidate="UserNameTextbox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" /></td>
    </tr>

    <tr>
      <td>Email Address:</td>
      <td><asp:Textbox id="EmailTextbox" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="EmailRequiredValidator" runat="server"
                                      ControlToValidate="EmailTextbox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" /></td>
    </tr>

    <tr>
      <td></td>
      <td><asp:Button id="CreateUserButton" Text="Create User" OnClick="CreateUser_OnClick" runat="server" /></td>
    </tr>
  </table>
</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">

Public Sub CreateUser_OnClick(sender As Object, args As EventArgs)
  ' Generate a new 12-character password with at least 1 non-alphanumeric character.
  Dim password As String = Membership.GeneratePassword(12, 1)

  Try
    ' Create new user.
    Dim newUser As MembershipUser = Membership.CreateUser(UsernameTextbox.Text, password, _
                                                          EmailTextbox.Text)

    Msg.Text = "User <b>" & Server.HtmlEncode(UsernameTextbox.Text) & "</b> created. " & _
               "Your temporary password is " & password & "."
  
  Catch e As MembershipCreateUserException
    Msg.Text = GetErrorMessage(e.StatusCode)
  Catch e As HttpException
    Msg.Text = e.Message
  End Try
End Sub

Public Function GetErrorMessage(status As MembershipCreateStatus) As String

   Select Case status
      Case MembershipCreateStatus.DuplicateUserName
        Return "Username already exists. Please enter a different user name."

      Case MembershipCreateStatus.DuplicateEmail
        Return "A username for that email address already exists. Please enter a different email address."

      Case MembershipCreateStatus.InvalidPassword
        Return "The password provided is invalid. Please enter a valid password value."

      Case MembershipCreateStatus.InvalidEmail
        Return "The email address provided is invalid. Please check the value and try again."

      Case MembershipCreateStatus.InvalidAnswer
        Return "The password retrieval answer provided is invalid. Please check the value and try again."

      Case MembershipCreateStatus.InvalidQuestion
        Return "The password retrieval question provided is invalid. Please check the value and try again."

      Case MembershipCreateStatus.ProviderError
        Return "The authentication provider Returned an error. Please verify your entry and try again. If the problem persists, please contact your system administrator."

      Case MembershipCreateStatus.UserRejected
        Return "The user creation request has been canceled. Please verify your entry and try again. If the problem persists, please contact your system administrator."

      Case Else
        Return "An unknown error occurred. Please verify your entry and try again. If the problem persists, please contact your system administrator."
   End Select
End Function

</script>

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

<form id="form1" runat="server">
  <h3>Create New User</h3>

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

  <table cellpadding="3" border="0">
    <tr>
      <td>Username:</td>
      <td><asp:Textbox id="UsernameTextbox" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="UsernameRequiredValidator" runat="server"
                                      ControlToValidate="UserNameTextbox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" /></td>
    </tr>

    <tr>
      <td>Email Address:</td>
      <td><asp:Textbox id="EmailTextbox" runat="server" /></td>
      <td><asp:RequiredFieldValidator id="EmailRequiredValidator" runat="server"
                                      ControlToValidate="EmailTextbox" ForeColor="red"
                                      Display="Static" ErrorMessage="Required" /></td>
    </tr>

    <tr>
      <td></td>
      <td><asp:Button id="CreateUserButton" Text="Create User" OnClick="CreateUser_OnClick" runat="server" /></td>
    </tr>
  </table>
</form>

</body>
</html>

Comentarios

El GeneratePassword método se usa para generar una contraseña aleatoria y se usa normalmente el ResetPassword método implementado por un proveedor de pertenencia para restablecer la contraseña de un usuario a una nueva contraseña temporal.The GeneratePassword method is used to generate a random password and is most commonly used by the ResetPassword method implemented by a membership provider to reset the password for a user to a new, temporary password.

La contraseña generada contiene solo caracteres alfanuméricos y los signos de puntuación siguientes: !@#$%^&*()_-+=[{]};:<>|./?.The generated password only contains alphanumeric characters and the following punctuation marks: !@#$%^&*()_-+=[{]};:<>|./?. Ningún carácter de control oculto o no imprimibles se incluye en la contraseña generada.No hidden or non-printable control characters are included in the generated password.

Nota

La contraseña aleatoria creada por el GeneratePassword no se garantiza que el método pasa la expresión regular en la PasswordStrengthRegularExpression propiedad.The random password created by the GeneratePassword method is not guaranteed to pass the regular expression in the PasswordStrengthRegularExpression property. Sin embargo, la contraseña aleatoria cumplirá los criterios establecidos por la MinRequiredPasswordLength propiedad y el numberOfNonAlphanumericCharacters parámetro.However, the random password will meet the criteria established by the MinRequiredPasswordLength property and the numberOfNonAlphanumericCharacters parameter.

Se aplica a

Consulte también: