Sorgenti: singleValueBinding.aspx – repeatedValueBinding.aspx
Scarica i sorgenti: aspnet08.zip
Articolo a cui si riferisce il codice: ASP.NET: Single Value e Repeated Data Binding
singleValueBinding.aspx – Prova il primo 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 # nome: SingleValueBinding.aspx
9 # scritto da: Antonio Volpon
10 # data creazione: 06 Novembre 2001
11 # ultima modifica: 06 Novembre 2001
12 # copyright: Antonio Volpon
13 —>
14
15 <script language="vb" runat="server">
16
17 ReadOnly Property UrlImmagine() As String
18 Get
19 Return "images/parigi.jpg"
20 End Get
21 End Property
22
23 ReadOnly Property WidthImmagine() As Unit
24 Get
25 Return Unit.Pixel(200)
26 End Get
27 End Property
28
29
30 ReadOnly Property HeightImmagine() As Unit
31 Get
32 Return Unit.Pixel(291)
33 End Get
34 End Property
35
36 Sub Page_Load(sender as Object, e as EventArgs)
37
38 DataBind()
39
40 End Sub
41
42 Function Metodo(strParam)
43 Return "Hai scritto ‘" & strParam & "’"
44 End Function
45
46 </script>
47
48 <html>
49 <head>
50 <link rel="stylesheet" href="css/aspnet.css" type="text/css">
51 </link>
52 <title>Single Value Data Binding</title>
53 </head>
54
55 <body>
56 <div class="titolo">
57 Single Value Data Binding
58 </div>
59
60 <hr noshade="noshade" size="1" width="100%" />
61
62 <center>
63
64 <!– SingleValue Data Binding come valore di una propriet –>
65
66 <div class="risposta"> Proprieta’: </div><br />
67
68 <asp:Image id="immagine" runat="server" ImageUrl="<%# UrlImmagine %>" Width="<%# WidthImmagine %>" Height="<%# HeightImmagine %>" />
69
70 <br /><br />
71
72 <!– SingleValue Data Binding come valore di ritorno di un metodo –>
73
74 <div class="risposta"> Metodo: </div><br />
75
76 <asp:label id="method" runat="server" text=’<%# Metodo("Ciao") %>‘ class="txt" />
77
78 <br /><br />
79
80 <!– SingleValue Data Binding come risultato di una espressione –>
81
82 <div class="risposta"> Espressione: </div><br />
83
84 <asp:label id="expression" runat="server" text="<%# (10+10) / 2 %>" class="txt" />
85
86 <br /><br />
87
88 <!– SingleValue Data Binding come valore delle propriet di un controllo –>
89
90 <div class="risposta"> Controllo: </div><br />
91
92 <asp:label id="control" runat="server" text="<%# immagine.ID %>" class="txt"/>
93
94 <br /><br />
95
96 <input type="text" value="<%# immagine.ID %>">
97
98 <br /><br />
99
100 <form runat="server">
101
102 <asp:DropDownList id="Colori" runat="server">
103 <asp:ListItem>Rosso</asp:ListItem>
104 <asp:ListItem>Verde</asp:ListItem>
105 <asp:ListItem>Giallo</asp:ListItem>
106 <asp:ListItem>Arancione</asp:ListItem>
107 <asp:ListItem>Celeste</asp:ListItem>
108 <asp:ListItem>Nero</asp:ListItem>
109 <asp:ListItem>Bianco</asp:ListItem>
110 </asp:DropDownList>
111
112 <input type="submit" value="Invia" runat="server">
113
114 <p>
115
116 Hai scelto il colore: <asp:label text=’<%# Colori.SelectedItem.Text %>‘ runat="server" />
117
118 </form>
119
120 </center>
121
122 <ANet:Footer id="Menu" runat="server" />
123
124 </body>
125
126 </html>
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: SingleValueBinding.aspx
9 # scritto da: Antonio Volpon
10 # data creazione: 06 Novembre 2001
11 # ultima modifica: 06 Novembre 2001
12 # copyright: Antonio Volpon
13 —>
14
15 <script language="vb" runat="server">
16
17 ReadOnly Property UrlImmagine() As String
18 Get
19 Return "images/parigi.jpg"
20 End Get
21 End Property
22
23 ReadOnly Property WidthImmagine() As Unit
24 Get
25 Return Unit.Pixel(200)
26 End Get
27 End Property
28
29
30 ReadOnly Property HeightImmagine() As Unit
31 Get
32 Return Unit.Pixel(291)
33 End Get
34 End Property
35
36 Sub Page_Load(sender as Object, e as EventArgs)
37
38 DataBind()
39
40 End Sub
41
42 Function Metodo(strParam)
43 Return "Hai scritto ‘" & strParam & "’"
44 End Function
45
46 </script>
47
48 <html>
49 <head>
50 <link rel="stylesheet" href="css/aspnet.css" type="text/css">
51 </link>
52 <title>Single Value Data Binding</title>
53 </head>
54
55 <body>
56 <div class="titolo">
57 Single Value Data Binding
58 </div>
59
60 <hr noshade="noshade" size="1" width="100%" />
61
62 <center>
63
64 <!– SingleValue Data Binding come valore di una propriet –>
65
66 <div class="risposta"> Proprieta’: </div><br />
67
68 <asp:Image id="immagine" runat="server" ImageUrl="<%# UrlImmagine %>" Width="<%# WidthImmagine %>" Height="<%# HeightImmagine %>" />
69
70 <br /><br />
71
72 <!– SingleValue Data Binding come valore di ritorno di un metodo –>
73
74 <div class="risposta"> Metodo: </div><br />
75
76 <asp:label id="method" runat="server" text=’<%# Metodo("Ciao") %>‘ class="txt" />
77
78 <br /><br />
79
80 <!– SingleValue Data Binding come risultato di una espressione –>
81
82 <div class="risposta"> Espressione: </div><br />
83
84 <asp:label id="expression" runat="server" text="<%# (10+10) / 2 %>" class="txt" />
85
86 <br /><br />
87
88 <!– SingleValue Data Binding come valore delle propriet di un controllo –>
89
90 <div class="risposta"> Controllo: </div><br />
91
92 <asp:label id="control" runat="server" text="<%# immagine.ID %>" class="txt"/>
93
94 <br /><br />
95
96 <input type="text" value="<%# immagine.ID %>">
97
98 <br /><br />
99
100 <form runat="server">
101
102 <asp:DropDownList id="Colori" runat="server">
103 <asp:ListItem>Rosso</asp:ListItem>
104 <asp:ListItem>Verde</asp:ListItem>
105 <asp:ListItem>Giallo</asp:ListItem>
106 <asp:ListItem>Arancione</asp:ListItem>
107 <asp:ListItem>Celeste</asp:ListItem>
108 <asp:ListItem>Nero</asp:ListItem>
109 <asp:ListItem>Bianco</asp:ListItem>
110 </asp:DropDownList>
111
112 <input type="submit" value="Invia" runat="server">
113
114 <p>
115
116 Hai scelto il colore: <asp:label text=’<%# Colori.SelectedItem.Text %>‘ runat="server" />
117
118 </form>
119
120 </center>
121
122 <ANet:Footer id="Menu" runat="server" />
123
124 </body>
125
126 </html>
repeatedValueBinding.aspx – Prova il secondo 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 # nome: RepeatedValueBinding.aspx
9 # scritto da: Antonio Volpon
10 # data creazione: 07 Novembre 2001
11 # ultima modifica: 07 Novembre 2001
12 # copyright: Antonio Volpon
13 —>
14
15 <script language="vb" runat="server">
16
17 Sub Page_Load()
18
19 ‘Databind con Arraylist
20
21 Dim alLibri as New ArrayList(4)
22 alLibri.Add("Cuore")
23 alLibri.Add("Il giovane Holden")
24 alLibri.Add("Farheneit 451")
25 alLibri.Add("Cent’anni di solitudine")
26
27 libri.DataSource = alLibri
28
29 ‘DataBind con HashTable
30
31 Dim htProvince as New HashTable(12)
32
33 htProvince.Add("Fi","Firenze")
34 htProvince.Add("Mi","Milano")
35 htProvince.Add("Pa","Palermo")
36 htProvince.Add("Po","Prato")
37 htProvince.Add("Rg","Ragusa")
38 htProvince.Add("Ra","Ravenna")
39 htProvince.Add("Ri","Rieti")
40 htProvince.Add("Rn","Rimini")
41 htProvince.Add("Rm","Roma")
42 htProvince.Add("Ro","Rovigo")
43 htProvince.Add("Tv","Treviso")
44 htProvince.Add("Ve","Venezia")
45
46 province.DataSource = htProvince
47 province.DataTextField = "Value"
48 province.DataValueField = "Key"
49
50 Dim htAcquisti as New HashTable(4)
51
52 htAcquisti.Add("Latte",1500)
53 htAcquisti.Add("Burro",4000)
54 htAcquisti.Add("Pane",2500)
55 htAcquisti.Add("Pasta",2000)
56
57 acquisti.DataSource = htAcquisti
58
59 Dim slAlfabeto as New SortedList(5)
60
61 slAlfabeto.Add("A","Arancia")
62 slAlfabeto.Add("B","Bicchiere")
63 slAlfabeto.Add("C","Cesto")
64 slAlfabeto.Add("D","Dentifricio")
65 slAlfabeto.Add("E","Elefante")
66 slAlfabeto.Add("F","Fungo")
67 slAlfabeto.Add("G","Giglio")
68 slAlfabeto.Add("H","Hotel")
69
70 alfabeto.DataSource = slAlfabeto
71
72 Page.DataBind()
73
74 If Page.IsPostBack Then
75
76 alfabeto.RepeatColumns = cint(numcolonne.SelectedItem.Value)
77
78 If Ori.Checked Then alfabeto.RepeatDirection = RepeatDirection.Horizontal
79 If Ver.Checked Then alfabeto.RepeatDirection = RepeatDirection.Vertical
80
81 Else
82
83 Ori.Checked = true
84 numcolonne.Items(1).Selected = true
85
86 End If
87
88 End Sub
89
90 </script>
91
92 <html>
93 <head>
94 <link rel="stylesheet" href="css/aspnet.css" type="text/css">
95 </link>
96 <title>Repeated Value Binding</title>
97 </head>
98
99 <body>
100 <div class="titolo">
101 Repeated Value Binding
102 </div>
103
104 <hr noshade="true" size="1" width="100%">
105
106 <center>
107
108 <form runat="server">
109
110 <div class="risposta">Con un Arraylist</div><br />
111
112 <asp:DropDownList id="libri" runat="server" /><br /><br />
113
114 <div class="risposta">Con un HastTable</div><br />
115
116 <asp:RadioButtonList id="province" runat="server" /><br /><br />
117
118 <hr noshade="true" size="1" width="100%">
119
120 <asp:Repeater id="acquisti" runat="server">
121
122 <HeaderTemplate>
123 <table border="0" cellpadding="0" cellspacing="0">
124 <tr>
125 <td width="100" bgcolor="#C0C0FF"><b>Bene</b></td>
126 <td width="100" bgcolor="#C0C0FF"><b>Prezzo</b></td>
127 </tr>
128 </HeaderTemplate>
129
130 <ItemTemplate>
131 <tr>
132 <td width="100" bgcolor="#FFFFC0"><%# Container.DataItem.Key %></td>
133 <td width="100" bgcolor="#FFFFC0"><%# DataBinder.Eval(Container.DataItem,"Value","{0:c}") %></td>
134 </tr>
135 </ItemTemplate>
136
137 <AlternatingItemTemplate>
138 <tr>
139 <td width="100" bgcolor="#C0C0C0"><%# DataBinder.Eval(Container.DataItem,"Key") %></td>
140 <td width="100" bgcolor="#C0C0C0"><%# DataBinder.Eval(Container.DataItem,"Value","{0:c}") %></td>
141 </tr>
142 </AlternatingItemTemplate>
143
144 <SeparatorTemplate>
145 <tr>
146 <td colspan="2" width="200" background="images/separatore.gif" height="17" bgcolor="#C0FFC0"><img src="images/space.gif" height="1"></td>
147 </tr>
148 </SeparatorTemplate>
149
150 <FooterTemplate>
151 </table>
152 </FooterTemplate>
153
154 </asp:Repeater>
155
156 <div class="risposta">Con un SortedList</div><br />
157
158 <span class="txt">Numero di colonne:</span>
159
160 <asp:RadioButtonList id="numcolonne" runat="server" AutoPostBack="true" cssClass="txt" RepeatDirection="Horizontal">
161 <asp:ListItem Value="1">1</asp:ListItem>
162 <asp:ListItem Value="2">2</asp:ListItem>
163 <asp:ListItem Value="3">3</asp:ListItem>
164 </asp:RadioButtonList>
165
166 <span class="txt">Direzione:</span><br />
167
168 <asp:RadioButton id="Ori" GroupName="Direzione" AutoPostback="True" runat="server" cssClass="txt" /><span class="txt">Orizzontale</class>
169 <asp:RadioButton id="Ver" GroupName="Direzione" AutoPostback="True" runat="server" cssClass="txt" /><span class="txt">Verticale</class><br />
170
171
172 <asp:DataList id="alfabeto" RepeatTemplate="table" RepeatColumns="2" RepeatDirection="Horizontal" runat="server">
173
174 <HeaderTemplate>
175 <span class="txtb">L’alfabeto</span>
176 </HeaderTemplate>
177
178 <ItemTemplate>
179 <span>
180 <%# Container.DataItem.Key %> come <%# Container.DataItem.Value %>
181 </span>
182 </ItemTemplate>
183
184 <ItemStyle BackColor="#cccccc"></ItemStyle>
185
186 <AlternatingItemStyle BackColor="#66ffcc"></AlternatingItemStyle>
187
188 </asp:DataList>
189
190 </form>
191
192 </center>
193
194 <ANet:Footer id="Menu" runat="server" />
195
196 </body>
197
198 </html>
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: RepeatedValueBinding.aspx
9 # scritto da: Antonio Volpon
10 # data creazione: 07 Novembre 2001
11 # ultima modifica: 07 Novembre 2001
12 # copyright: Antonio Volpon
13 —>
14
15 <script language="vb" runat="server">
16
17 Sub Page_Load()
18
19 ‘Databind con Arraylist
20
21 Dim alLibri as New ArrayList(4)
22 alLibri.Add("Cuore")
23 alLibri.Add("Il giovane Holden")
24 alLibri.Add("Farheneit 451")
25 alLibri.Add("Cent’anni di solitudine")
26
27 libri.DataSource = alLibri
28
29 ‘DataBind con HashTable
30
31 Dim htProvince as New HashTable(12)
32
33 htProvince.Add("Fi","Firenze")
34 htProvince.Add("Mi","Milano")
35 htProvince.Add("Pa","Palermo")
36 htProvince.Add("Po","Prato")
37 htProvince.Add("Rg","Ragusa")
38 htProvince.Add("Ra","Ravenna")
39 htProvince.Add("Ri","Rieti")
40 htProvince.Add("Rn","Rimini")
41 htProvince.Add("Rm","Roma")
42 htProvince.Add("Ro","Rovigo")
43 htProvince.Add("Tv","Treviso")
44 htProvince.Add("Ve","Venezia")
45
46 province.DataSource = htProvince
47 province.DataTextField = "Value"
48 province.DataValueField = "Key"
49
50 Dim htAcquisti as New HashTable(4)
51
52 htAcquisti.Add("Latte",1500)
53 htAcquisti.Add("Burro",4000)
54 htAcquisti.Add("Pane",2500)
55 htAcquisti.Add("Pasta",2000)
56
57 acquisti.DataSource = htAcquisti
58
59 Dim slAlfabeto as New SortedList(5)
60
61 slAlfabeto.Add("A","Arancia")
62 slAlfabeto.Add("B","Bicchiere")
63 slAlfabeto.Add("C","Cesto")
64 slAlfabeto.Add("D","Dentifricio")
65 slAlfabeto.Add("E","Elefante")
66 slAlfabeto.Add("F","Fungo")
67 slAlfabeto.Add("G","Giglio")
68 slAlfabeto.Add("H","Hotel")
69
70 alfabeto.DataSource = slAlfabeto
71
72 Page.DataBind()
73
74 If Page.IsPostBack Then
75
76 alfabeto.RepeatColumns = cint(numcolonne.SelectedItem.Value)
77
78 If Ori.Checked Then alfabeto.RepeatDirection = RepeatDirection.Horizontal
79 If Ver.Checked Then alfabeto.RepeatDirection = RepeatDirection.Vertical
80
81 Else
82
83 Ori.Checked = true
84 numcolonne.Items(1).Selected = true
85
86 End If
87
88 End Sub
89
90 </script>
91
92 <html>
93 <head>
94 <link rel="stylesheet" href="css/aspnet.css" type="text/css">
95 </link>
96 <title>Repeated Value Binding</title>
97 </head>
98
99 <body>
100 <div class="titolo">
101 Repeated Value Binding
102 </div>
103
104 <hr noshade="true" size="1" width="100%">
105
106 <center>
107
108 <form runat="server">
109
110 <div class="risposta">Con un Arraylist</div><br />
111
112 <asp:DropDownList id="libri" runat="server" /><br /><br />
113
114 <div class="risposta">Con un HastTable</div><br />
115
116 <asp:RadioButtonList id="province" runat="server" /><br /><br />
117
118 <hr noshade="true" size="1" width="100%">
119
120 <asp:Repeater id="acquisti" runat="server">
121
122 <HeaderTemplate>
123 <table border="0" cellpadding="0" cellspacing="0">
124 <tr>
125 <td width="100" bgcolor="#C0C0FF"><b>Bene</b></td>
126 <td width="100" bgcolor="#C0C0FF"><b>Prezzo</b></td>
127 </tr>
128 </HeaderTemplate>
129
130 <ItemTemplate>
131 <tr>
132 <td width="100" bgcolor="#FFFFC0"><%# Container.DataItem.Key %></td>
133 <td width="100" bgcolor="#FFFFC0"><%# DataBinder.Eval(Container.DataItem,"Value","{0:c}") %></td>
134 </tr>
135 </ItemTemplate>
136
137 <AlternatingItemTemplate>
138 <tr>
139 <td width="100" bgcolor="#C0C0C0"><%# DataBinder.Eval(Container.DataItem,"Key") %></td>
140 <td width="100" bgcolor="#C0C0C0"><%# DataBinder.Eval(Container.DataItem,"Value","{0:c}") %></td>
141 </tr>
142 </AlternatingItemTemplate>
143
144 <SeparatorTemplate>
145 <tr>
146 <td colspan="2" width="200" background="images/separatore.gif" height="17" bgcolor="#C0FFC0"><img src="images/space.gif" height="1"></td>
147 </tr>
148 </SeparatorTemplate>
149
150 <FooterTemplate>
151 </table>
152 </FooterTemplate>
153
154 </asp:Repeater>
155
156 <div class="risposta">Con un SortedList</div><br />
157
158 <span class="txt">Numero di colonne:</span>
159
160 <asp:RadioButtonList id="numcolonne" runat="server" AutoPostBack="true" cssClass="txt" RepeatDirection="Horizontal">
161 <asp:ListItem Value="1">1</asp:ListItem>
162 <asp:ListItem Value="2">2</asp:ListItem>
163 <asp:ListItem Value="3">3</asp:ListItem>
164 </asp:RadioButtonList>
165
166 <span class="txt">Direzione:</span><br />
167
168 <asp:RadioButton id="Ori" GroupName="Direzione" AutoPostback="True" runat="server" cssClass="txt" /><span class="txt">Orizzontale</class>
169 <asp:RadioButton id="Ver" GroupName="Direzione" AutoPostback="True" runat="server" cssClass="txt" /><span class="txt">Verticale</class><br />
170
171
172 <asp:DataList id="alfabeto" RepeatTemplate="table" RepeatColumns="2" RepeatDirection="Horizontal" runat="server">
173
174 <HeaderTemplate>
175 <span class="txtb">L’alfabeto</span>
176 </HeaderTemplate>
177
178 <ItemTemplate>
179 <span>
180 <%# Container.DataItem.Key %> come <%# Container.DataItem.Value %>
181 </span>
182 </ItemTemplate>
183
184 <ItemStyle BackColor="#cccccc"></ItemStyle>
185
186 <AlternatingItemStyle BackColor="#66ffcc"></AlternatingItemStyle>
187
188 </asp:DataList>
189
190 </form>
191
192 </center>
193
194 <ANet:Footer id="Menu" runat="server" />
195
196 </body>
197
198 </html>