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MasterPage.MasterPageFile Property

Gets or sets the name of the master page that contains the current content.

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

public string MasterPageFile { get; set; }
/** @property */
public String get_MasterPageFile ()

/** @property */
public void set_MasterPageFile (String value)

public function get MasterPageFile () : String

public function set MasterPageFile (value : String)

Not applicable.

Property Value

The name of the master page that is the parent of the current master page; otherwise, a null reference (Nothing in Visual Basic), if the current master page has no parent.

Exception typeCondition

InvalidOperationException

The MasterPageFile property can only be set in or before the PreInit event.

This section contains three code examples. The first code example demonstrates how to create a nested master page. The second code example demonstrates how to reference the master page that was created in the first code example. The third code example demonstrates how to use a content page to reference the master page that was created in the second code example.

The following code example demonstrates how to create a nested master page and represents the parent master page named ParentMasterPage_1.

<%@ Master Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Nested Master Page Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <h1>This is content in the parent master page.</h1>
    <div>
        <asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
        </asp:contentplaceholder>
    </div>
    </form>
</body>
</html>

The following code example demonstrates how to use a nested master page named ChildMasterPage_1 that references the master page that was created in the preceding code example.

<%@ Master Language="C#" MasterPageFile="~/ParentMasterPage_1cs.master" %>

<asp:Content Runat="Server" ContentPlaceHolderID="ContentPlaceHolder1">
    <h2>This is the content of a nested Master Page.</h2>
    <div>
        <asp:contentplaceholder id="ContentPlaceHolder2" runat="server">
        </asp:contentplaceholder>
    </div>
</asp:Content>

The following code example demonstrates how to use a content page named ContentPage that references the ChildMasterPage_1 that was created in the preceding code example.

<%@ Page Language="C#" MasterPageFile="~/ChildMasterPage_1cs.master" Title="Untitled Page"%>

<asp:content runat="server" contentplaceholderid="ContentPlaceHolder2">
This is the content of a Content control.
</asp:content>

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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