Identifies a container control that creates a new ID namespace within a Page object's control hierarchy. This is a marker interface only.
Namespace:
System.Web.UI
Assembly:
System.Web (in System.Web.dll)
Visual Basic (Declaration)
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
Public Interface INamingContainer
Dim instance As INamingContainer
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public interface INamingContainer
[AspNetHostingPermissionAttribute(SecurityAction::LinkDemand, Level = AspNetHostingPermissionLevel::Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction::InheritanceDemand, Level = AspNetHostingPermissionLevel::Minimal)]
public interface class INamingContainer
public interface INamingContainer
Any control that implements this interface creates a new namespace in which all child control ID attributes are guaranteed to be unique within an entire application. The marker provided by this interface allows unique naming of the dynamically generated server control instances within the Web server controls that support data binding. These controls include the Repeater, DataGrid, DataList, CheckBoxList, ChangePassword, LoginView, Menu, SiteMapNodeItem, and RadioButtonList controls.
When you develop templated controls, you should implement this interface to avoid naming conflicts on a page. For more information, see ASP.NET Control Designers Overview.
The following code example demonstrates a templated custom server control that implements the INamingContainer interface. When this custom server control is used in an .aspx file, it will provide a unique namespace for any server controls that it contains.
Imports System
Imports System.Collections
Imports System.Web
Imports System.Web.UI
Namespace TemplateControlSamplesVB
Public Class RepeaterItemVB : Inherits Control : Implements INamingContainer
Private _ItemIndex As Integer
Private _DataItem As Object
Public Sub New(ItemIndex As Integer, DataItem As Object)
MyBase.New()
_ItemIndex = ItemIndex
_DataItem = DataItem
End Sub
Public ReadOnly Property DataItem As Object
Get
return _DataItem
End Get
End Property
Public ReadOnly Property ItemIndex As Integer
Get
return _ItemIndex
End Get
End Property
End Class
End Namespace
using System;
using System.Collections;
using System.Web;
using System.Web.UI;
namespace TemplateControlSamples {
public class RepeaterItem : Control, INamingContainer {
private int itemIndex;
private object dataItem;
public RepeaterItem(int itemIndex, object dataItem) {
this.itemIndex = itemIndex;
this.dataItem = dataItem;
}
public object DataItem {
get {
return dataItem;
}
}
public int ItemIndex {
get {
return itemIndex;
}
}
}
}
import System;
import System.Collections;
import System.Web;
import System.Web.UI;
package TemplateControlSamples {
public class RepeaterItem extends Control implements INamingContainer {
private var itemIndex : int;
private var dataItem;
function RepeaterItem(itemIndex : int, dataItem) {
this.itemIndex = itemIndex;
this.dataItem = dataItem;
}
function get DataItem() {
return dataItem;
}
function get ItemIndex() : int {
return itemIndex;
}
}
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
Reference
Other Resources