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Procedura: personalizzare il controllo PasswordRecovery

Aggiornamento: novembre 2007

È possibile personalizzare il controllo PasswordRecovery nei seguenti modi:

In questo argomento viene descritto come personalizzare il controllo System.Web.UI.WebControls.PasswordRecovery utilizzando i modelli.

Per modificare i modelli di PasswordRecovery

  1. Aggiungere un controllo PasswordRecovery alla pagina, come illustrato nell'esempio di codice riportato di seguito.

    <asp:PasswordRecovery ID="PasswordRecovery1" Runat="server">
    </asp:PasswordRecovery>
    
  2. È possibile applicare stili per personalizzare l'aspetto del controllo PasswordRecovery. Utilizzare le proprietà per applicare gli stili desiderati al modello, ad esempio LabelStyle, HyperLinkStyle e TitleTextStyle.

    Per personalizzare il contenuto del controllo PasswordRecovery, continuare con i passaggi descritti di seguito per modificare i modelli utilizzati dal controllo PasswordRecovery.

  3. Creare un modello UserNameTemplate per specificare il codice e i controlli visualizzati quando viene eseguito per la prima volta il rendering del controllo, come illustrato nell'esempio di codice riportato di seguito.

    Nota sulla sicurezza:

    L'esempio include una casella di testo che accetta l'input dell'utente e rappresenta quindi una potenziale minaccia alla sicurezza. Per impostazione predefinita, le pagine Web ASP.NET verificano che l'input dell'utente non includa script o elementi HTML. Per ulteriori informazioni, vedere Cenni preliminari sugli attacchi tramite script.

    <UserNameTemplate>
      <table border="0" cellpadding="1">
        <tr>
          <td>
            <table border="0" cellpadding="0">
              <tr>
                <td align="center" colspan="2">
                  Forgot Your Password?</td>
              </tr>
              <tr>
                <td align="center" colspan="2">
                  Enter your User Name to receive your password.</td>
              </tr>
              <tr>
                <td align="right">
                  <asp:Label ID="UserNameLabel"  AssociatedControlID="UserName">User Name:</asp:Label></td>
                <td>
                  <asp:TextBox ID="UserName" ></asp:TextBox>
                  <asp:RequiredFieldValidator ID="UserNameRequired"  ControlToValidate="UserName"
                    ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                </td>
              </tr>
              <tr>
                <td align="center" colspan="2" style="color: red">
                  <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right" colspan="2">
                  <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </UserNameTemplate>
    
    <UserNameTemplate>
      <table border="0" cellpadding="1">
        <tr>
          <td>
            <table border="0" cellpadding="0">
              <tr>
                <td align="center" colspan="2">
                  Forgot Your Password?</td>
              </tr>
              <tr>
                <td align="center" colspan="2">
                  Enter your User Name to receive your password.</td>
              </tr>
              <tr>
                <td align="right">
                  <asp:Label ID="UserNameLabel"  AssociatedControlID="UserName">User Name:</asp:Label></td>
                <td>
                  <asp:TextBox ID="UserName" ></asp:TextBox>
                  <asp:RequiredFieldValidator ID="UserNameRequired"  ControlToValidate="UserName"
                    ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                </td>
              </tr>
              <tr>
                <td align="center" colspan="2" style="color: red">
                  <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right" colspan="2">
                  <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </UserNameTemplate>
    
  4. Creare un modello QuestionTemplate per specificare il codice e i controlli visualizzati quando il controllo richiede all'utente di rispondere alla domanda segreta, come illustrato nell'esempio di codice riportato di seguito.

    Nota sulla sicurezza:

    L'esempio include una casella di testo che accetta l'input dell'utente e rappresenta quindi una potenziale minaccia alla sicurezza. Per impostazione predefinita, le pagine Web ASP.NET verificano che l'input dell'utente non includa script o elementi HTML. Per ulteriori informazioni, vedere Cenni preliminari sugli attacchi tramite script.

    <QuestionTemplate>
      <table border="0" cellpadding="1">
        <tr>
          <td>
            <table border="0" cellpadding="0">
              <tr>
                <td align="center" colspan="2">
                  Identity Confirmation</td>
              </tr>
              <tr>
                <td align="center" colspan="2">
                  Answer the following question to receive your password.</td>
              </tr>
              <tr>
                <td align="right">
                  User Name:</td>
                <td>
                  <asp:Literal ID="UserName" ></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right">
                  Question:</td>
                <td>
                  <asp:Literal ID="Question" ></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right">
                  <asp:Label ID="AnswerLabel"  AssociatedControlID="Answer">Answer:</asp:Label></td>
                <td>
                  <asp:TextBox ID="Answer" ></asp:TextBox>
                  <asp:RequiredFieldValidator ID="AnswerRequired"  ControlToValidate="Answer"
                    ErrorMessage="Answer is required." ToolTip="Answer is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                </td>
              </tr>
              <tr>
                <td align="center" colspan="2" style="color: red">
                  <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right" colspan="2">
                  <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </QuestionTemplate>
    
    <QuestionTemplate>
      <table border="0" cellpadding="1">
        <tr>
          <td>
            <table border="0" cellpadding="0">
              <tr>
                <td align="center" colspan="2">
                  Identity Confirmation</td>
              </tr>
              <tr>
                <td align="center" colspan="2">
                  Answer the following question to receive your password.</td>
              </tr>
              <tr>
                <td align="right">
                  User Name:</td>
                <td>
                  <asp:Literal ID="UserName" ></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right">
                  Question:</td>
                <td>
                  <asp:Literal ID="Question" ></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right">
                  <asp:Label ID="AnswerLabel"  AssociatedControlID="Answer">Answer:</asp:Label></td>
                <td>
                  <asp:TextBox ID="Answer" ></asp:TextBox>
                  <asp:RequiredFieldValidator ID="AnswerRequired"  ControlToValidate="Answer"
                    ErrorMessage="Answer is required." ToolTip="Answer is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                </td>
              </tr>
              <tr>
                <td align="center" colspan="2" style="color: red">
                  <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                </td>
              </tr>
              <tr>
                <td align="right" colspan="2">
                  <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                </td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </QuestionTemplate>
    
  5. Creare un modello SuccessTemplate per specificare il codice e i controlli visualizzati quando l'utente recupera correttamente la password.

    Nell'esempio di codice riportato di seguito è indicato il codice per un controllo PasswordRecovery con un modello SuccessTemplate definito.

    Nota sulla sicurezza:

    L'esempio include una casella di testo che accetta l'input dell'utente e rappresenta quindi una potenziale minaccia alla sicurezza. Per impostazione predefinita, le pagine Web ASP.NET verificano che l'input dell'utente non includa script o elementi HTML. Per ulteriori informazioni, vedere Cenni preliminari sugli attacchi tramite script.

    <%@ Page Language="VB" %>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <script >
    
    </script>
    
    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head >
      <meta http-equiv="Content-Type" content="text/html" />
      <title>PasswordRecovery All Templates Sample</title>
    </head>
    <body>
        <form id="form1" >
        <div title="All Templates Sample">
          <asp:PasswordRecovery ID="PasswordRecovery1" >
            <QuestionTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td align="center" colspan="2">
                          Identity Confirmation</td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2">
                          Answer the following question to receive your password.</td>
                      </tr>
                      <tr>
                        <td align="right">
                          User Name:</td>
                        <td>
                          <asp:Literal ID="UserName" ></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right">
                          Question:</td>
                        <td>
                          <asp:Literal ID="Question" ></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right">
                          <asp:Label ID="AnswerLabel"  AssociatedControlID="Answer">Answer:</asp:Label></td>
                        <td>
                          <asp:TextBox ID="Answer" ></asp:TextBox>
                          <asp:RequiredFieldValidator ID="AnswerRequired"  ControlToValidate="Answer"
                            ErrorMessage="Answer is required." ToolTip="Answer is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                        </td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2" style="color: red">
                          <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right" colspan="2">
                          <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                        </td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </QuestionTemplate>
            <UserNameTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td align="center" colspan="2">
                          Forgot Your Password?</td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2">
                          Enter your User Name to receive your password.</td>
                      </tr>
                      <tr>
                        <td align="right">
                          <asp:Label ID="UserNameLabel"  AssociatedControlID="UserName">User Name:</asp:Label></td>
                        <td>
                          <asp:TextBox ID="UserName" ></asp:TextBox>
                          <asp:RequiredFieldValidator ID="UserNameRequired"  ControlToValidate="UserName"
                            ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                        </td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2" style="color: red">
                          <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right" colspan="2">
                          <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                        </td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </UserNameTemplate>
            <SuccessTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td>
                          Your password has been sent to you.</td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </SuccessTemplate>
          </asp:PasswordRecovery>
    
        </div>
        </form>
      </body>
    </html>
    
    <%@ Page Language="C#" %>
    
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <script >
    
    </script>
    
    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head >
        <title>Password Recovery All Templates Sample</title>
    </head>
    <body>
        <form id="form1" >
        <div title="All Templates Sample">
          <asp:PasswordRecovery ID="PasswordRecovery1" >
            <QuestionTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td align="center" colspan="2">
                          Identity Confirmation</td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2">
                          Answer the following question to receive your password.</td>
                      </tr>
                      <tr>
                        <td align="right">
                          User Name:</td>
                        <td>
                          <asp:Literal ID="UserName" ></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right">
                          Question:</td>
                        <td>
                          <asp:Literal ID="Question" ></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right">
                          <asp:Label ID="AnswerLabel"  AssociatedControlID="Answer">Answer:</asp:Label></td>
                        <td>
                          <asp:TextBox ID="Answer" ></asp:TextBox>
                          <asp:RequiredFieldValidator ID="AnswerRequired"  ControlToValidate="Answer"
                            ErrorMessage="Answer is required." ToolTip="Answer is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                        </td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2" style="color: red">
                          <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right" colspan="2">
                          <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                        </td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </QuestionTemplate>
            <UserNameTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td align="center" colspan="2">
                          Forgot Your Password?</td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2">
                          Enter your User Name to receive your password.</td>
                      </tr>
                      <tr>
                        <td align="right">
                          <asp:Label ID="UserNameLabel"  AssociatedControlID="UserName">User Name:</asp:Label></td>
                        <td>
                          <asp:TextBox ID="UserName" ></asp:TextBox>
                          <asp:RequiredFieldValidator ID="UserNameRequired"  ControlToValidate="UserName"
                            ErrorMessage="User Name is required." ToolTip="User Name is required." ValidationGroup="PasswordRecovery1">*</asp:RequiredFieldValidator>
                        </td>
                      </tr>
                      <tr>
                        <td align="center" colspan="2" style="color: red">
                          <asp:Literal ID="FailureText"  EnableViewState="False"></asp:Literal>
                        </td>
                      </tr>
                      <tr>
                        <td align="right" colspan="2">
                          <asp:Button ID="SubmitButton"  CommandName="Submit" Text="Submit" ValidationGroup="PasswordRecovery1" />
                        </td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </UserNameTemplate>
            <SuccessTemplate>
              <table border="0" cellpadding="1">
                <tr>
                  <td>
                    <table border="0" cellpadding="0">
                      <tr>
                        <td>
                          Your password has been sent to you.</td>
                      </tr>
                    </table>
                  </td>
                </tr>
              </table>
            </SuccessTemplate>
          </asp:PasswordRecovery>
    
        </div>
        </form>
    </body>
    </html>
    

Vedere anche

Concetti

Personalizzazione dell'aspetto dei controlli di accesso ASP.NET

Riferimenti

Cenni preliminari sui controlli di accesso di ASP.NET