Sorgenti: viewState.aspx
Scarica i sorgenti: aspnet03.zip
Articolo a cui si riferisce il codice: ASP.NET: Server Roundtrip e ViewState
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 # nome: ViewState.aspx
9 # scritto da: Antonio Volpon
10 # data creazione: 22 Novembre 2001
11 # ultima modifica: 22 Novembre 2001
12 # copyright: Antonio Volpon
13 –>
14
15 <script language="vb" runat="server">
16 Sub Page_Load(sender as Object, e as EventArgs)
17
18 If ViewState("colore") = "<font color=‘red’><b>Rosso</b></font>" Then
19 colore.InnerHtml = "<font color=‘black’><b>Nero</b></font>"
20 ViewState("colore") = "<font color=‘black’><b>Nero</b></font>"
21 Else
22 colore.InnerHtml = "<font color=‘red’><b>Rosso</b></font>"
23 ViewState("colore") = "<font color=‘red’><b>Rosso</b></font>"
24 End If
25
26 If IsNothing(ViewState("count")) Then
27 ViewState("count") = 1
28 Else
29 ViewState("count") += 1
30 End If
31
32 End Sub
33 </script>
34
35 <html>
36 <head>
37 <link rel="stylesheet" href="css/aspnet.css" type="text/css">
38 </link>
39 <title>ViewState</title>
40 </head>
41 <body>
42
43 <div class="titolo">
44 ViewState
45 </div>
46
47 <hr noshade="true" size="1" width="100%">
48
49 <center>
50
51 <div id="colore" runat="server" class="risposta"></div>
52
53 <br /><br />
54 <span class="txt">Il contatore segna <span id="contatore" runat="server" class="txtb"><%=ViewState("count")%></span> volte.</span>
55
56 <form runat="server">
57 <input type="submit" value="Riprova">
58 </form>
59
60 </center>
61
62 <ANet:Footer id="Menu" runat="server" />
63
64 </body>
65 </html>
66
67
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