ViewCollection.Add Method

Note: This method is new in the .NET Framework version 2.0.

Adds the specified View control to the collection.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public:
virtual void Add (
	Control^ v
) override
public void Add (
	Control v
)
public override function Add (
	v : Control
)

Parameters

v

The View control to add to the collection.

Exception typeCondition

ArgumentException

The v parameter does not specify a View control.

The Add method adds the new control to the end of an ordinal index array. The control can only be an instance of a View control.

To add a control to the collection at a specific index location, use the AddAt method.

The following code example demonstrates how to programmatically add View controls to a MultiView control. After each View control is created, the MultiView.Views.Add() syntax is used to add the View control to the ViewCollection collection of the MultiView control.

<%@ Page Language="VB"%>
<html>
<head> 
    <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 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0

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