Mise à jour : novembre 2007
Ajoute le contrôle spécifié View à la collection.
(dans System.Web.dll)
Visual Basic (Déclaration)
Public Overrides Sub Add ( _
v As Control _
)
Visual Basic (Utilisation)
Dim instance As ViewCollection
Dim v As Control
instance.Add(v)
public override void Add(
Control v
)
public:
virtual void Add(
Control^ v
) override
public void Add(
Control v
)
public override function Add(
v : Control
)
La méthode Add ajoute le nouveau contrôle à la fin d'une zone d'index ordinal. Le contrôle peut uniquement être une instance d'un contrôle View.
Pour ajouter un contrôle à la collection à un emplacement d'index spécifique, utilisez la méthode AddAt.
L'exemple de code suivant montre comment ajouter par programme des contrôles View à un contrôle MultiView. Après avoir créé chaque contrôle View, la syntaxe MultiView.Views.Add() est utilisée pour ajouter le contrôle View à la collection ViewCollection du contrôle MultiView.
<%@ Page Language="VB"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html >
<head>
<title>ViewCollection Class Example</title>
<script runat="server">
Sub Index_Changed(ByVal Sender As Object, ByVal e As EventArgs)
' A MultiView was added to the page declaratively.
' Now add the View control programmatically.
If SelectViewListBox.SelectedIndex >= 0 Then
' The user selected a view.
' Determine which view the user selected.
Dim viewName As String = SelectViewListBox.SelectedItem.Text
Dim myView as New View
' Use a helper function to create the view.
myView = CreateView(viewName, "This is " + viewName)
' Add myView to the ViewCollection of the MultiView1 control.
MultiView1.Views.Add(myView)
' Set myView as the active view.
MultiView1.SetActiveView(myView)
' The Panel control was initially set to not visible.
' Set it to visible to add styles to the myView.
Panel1.Visible=True
Else
Throw New Exception("You did not select a valid view.")
End If
End Sub
' A function to programmatically create a View control.
Private Function CreateView(ByVal viewId As String, ByVal viewDescription As String) As View
' Create a View control
Dim myView As New View
myView.ID = viewId
' Create a Label control.
Dim Label1 As New Label
' Set the text property for the label.
Label1.Text = viewDescription
' Add the label to the controls collection of the view.
myView.Controls.Add(Label1)
Return myView
End Function
</script>
</head>
<body>
<form id="Form1" runat="server">
<h3>ViewCollection Class Example</h3>
<h4>Select a View to create and display in a MultiView control:</h4>
<asp:ListBox ID="SelectViewListBox"
AutoPostBack="True"
Rows="1"
SelectionMode="Single"
OnSelectedIndexChanged="Index_Changed"
runat="Server">
<asp:ListItem Value="0">View1</asp:ListItem>
<asp:ListItem Value="1">View2</asp:ListItem>
</asp:ListBox><br /><br />
<hr /><br />
<asp:Panel ID="Panel1"
Height="75px"
Width="100px"
Backcolor="Aqua"
BorderStyle="Double"
Visible = "False"
runat="Server">
<asp:MultiView ID="MultiView1"
runat="Server">
</asp:MultiView>
</asp:Panel>
</form>
</body>
</html>
Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professionnel Édition x64, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
Le .NET Framework et le .NET Compact Framework ne prennent pas en charge toutes les versions de chaque plateforme. Pour obtenir la liste des versions prises en charge, consultez Configuration requise du .NET Framework.
.NET Framework
Pris en charge dans : 3.5, 3.0, 2.0
Référence