ASP.NET: Validation Controls – Controllare l’input dell’utente – Codice sorgente dell’esempio

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Sorgenti: RequiredFieldValidator.aspx

Scarica i sorgenti: aspnet06.zip

Articolo a cui si riferisce il codice: ASP.NET: Validation Controls

RequiredFieldValidator.aspx – Prova l’esempio [nuova finestra]

  1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  2   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
  3 
  4 <%@Page Language="VB"%>
  5 <%@Register TagPrefix="ANet" TagName="Footer" Src="includes/footer.ascx"%>
  6 
  7 
  8 <!—
  9 # nome: RequiredFieldValidator.aspx
 10 # scritto da: Antonio Volpon
 11 # data creazione: 25 Ottobre 2001
 12 # ultima modifica: 25 Ottobre 2001
 13 # copyright: Antonio Volpon
 14 —>
 15 
 16 <script language="vb" runat="server">
 17 
 18  Sub Button_Click(objSender as object, objArgs as EventArgs)
 19 
 20      If Page.IsValid Then
 21        risposta.InnerText = "Grazie per i tuoi dati."
 22      Else
 23        risposta.InnerText = "Devi compilare correttamente i campi."
 24      End If
 25      
 26  End Sub
 27 
 28 </script>
 29 
 30 
 31 <html>
 32   <head>
 33 
 34     <link rel="stylesheet" href="css/aspnet.css" type="text/css">
 35     </link>
 36     <title>Input Validation Controls: RequiredFieldValidator</title>
 37     
 38   </head>
 39   
 40   <body>
 41     <div class="titolo">
 42       Input Validation Controls: RequiredFieldValidator
 43     </div>
 44     
 45     <hr noshade="noshade" size="1" width="100%" />
 46 
 47     <form runat="server">
 48     <table border="0" align="center">
 49     <tr>
 50       <td align="right">Nome:</td>
 51        <td><input type="text" id="txtNome" size="20" runat="server" /></td>
 52        <td>
 53  <asp:RequiredFieldValidator id="reqNome"
 54  ControlToValidate="txtNome"
 55  Display="Static"
 56  runat="server">
 57        * Campo obbligatorio
 58        </asp:RequiredFieldValidator>
 59       </td>
 60      </tr>
 61     <tr>
 62        <td align="right">Cognome:</td>
 63        <td><input type="text" id="txtCognome" size="20" runat="server" /></td>
 64        <td>
 65  <asp:RequiredFieldValidator id="reqCognome"
 66  ControlToValidate="txtCognome"
 67  Display="Static"
 68  runat="server">
 69            * Campo obbligatorio
 70           </asp:RequiredFieldValidator>
 71        </td>
 72     </tr>
 73     <tr>
 74        <td align="right" colspan="2" align="right">
 75        
 76        <input type="submit"
 77          runat="server"
 78          value="Invia"
 79          onServerClick="Button_Click" />
 80          
 81        </td>
 82        <td>&nbsp;</td>
 83     </tr>
 84     </table>
 85 
 86    </form>
 87   
 88    <div class="risposta" runat="server" id="risposta" EnableViewState="false" />
 89  <ANet:Footer id="Menu" runat="server" />
 90 
 91   </body>
 92 </html>