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Content.ContentPlaceHolderID Property

Gets or sets the ID of the ContentPlaceHolder control that is associated with the current content.

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

[ThemeableAttribute(false)]
public string ContentPlaceHolderID { get; set; }
<asp:Content ContentPlaceHolderID="String" />

Property Value

Type: System.String
A string containing the ID of the ContentPlaceHolder associated with the current content. The default is an empty string ("").

ExceptionCondition
NotSupportedException

An attempt was made to set the property at run time.

All content that is encapsulated by the Content control renders within the referenced ContentPlaceHolder control in a master page. A Content control is not added to the control hierarchy at runtime.

This property cannot be set by themes or style sheet themes. For more information, see ThemeableAttribute and ASP.NET Themes and Skins.

The following code example shows how to use the ContentPlaceHolderID property of a ContentPlaceHolder control in an ASP.NET Web page.

This code example is part of a larger example provided for the Content class.

<%@ Page Language="C#" MasterPageFile="~/MasterPageSample_1cs.master" Title="Content Page"%>

<asp:content 
    runat="server"
    contentplaceholderid="ContentPlaceHolder1" >Hello, Master Pages!</asp:content>

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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