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ITemplate Interface

Defines the behavior for populating a templated ASP.NET server control with child controls. The child controls represent the inline templates defined on the page.

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

'Declaration
Public Interface ITemplate

The ITemplate type exposes the following members.

  NameDescription
Public methodInstantiateInWhen implemented by a class, defines the Control object that child controls and templates belong to. These child controls are in turn defined within an inline template.
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This interface is used by custom server controls, but never implemented by them. ASP.NET always implements it.

The following code example demonstrates a simple templated server control that uses the ITemplate interface to create a templated property.


Imports System
Imports System.Web
Imports System.Web.UI

Namespace TemplateControlSamplesVB

    Public Class TemplateItem
        Inherits Control
        Implements INamingContainer

        Private _message As String = Nothing

        Public Sub New(Message As String)
            _message = message
        End Sub

        Public Property Message As String
           Get
              Return _message
           End Get
           Set
              _message = Value
           End Set
        End Property
    End Class
    <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust"), _
    ParseChildren(true)> _
    Public Class Template1VB
        Inherits Control
        Implements INamingContainer

        Private _messageTemplate As ITemplate = Nothing
        Private _message As String = Nothing

        Public Property Message As String

           Get
              Return _message
           End Get
           Set
              _message = Value
           End Set
        End Property

        <TemplateContainer(GetType(TemplateItem))> _
        Public Property MessageTemplate As ITemplate

           Get
              Return _messageTemplate
           End Get
           Set
              _messageTemplate = Value
           End Set
        End Property

        Protected Overrides Sub CreateChildControls()

           ' If a template has been specified, use it to create children.
           ' Otherwise, create a single LiteralControl with the message value.

           If Not (MessageTemplate Is Nothing)
              Controls.Clear()
              Dim I As New TemplateItem(Me.Message)
              MessageTemplate.InstantiateIn(I)
              Controls.Add(I)
           Else
              Me.Controls.Add(New LiteralControl(Me.Message))
           End If
        End Sub

    End Class

End Namespace
   


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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