[RESOLVED] How to access to a control in nested master page

**motogpdesmo16** · Jan 7th, 2010, 01:51 PM

Hi everyone, I've a very strange problem!

There are 2 master page in my web project:
the first one is MasterPageA.Master which has some controls; the second one is MasterPageB.Master which is son of MasterPageA and it has some other controls.
There is also another page, named Default1.aspx, which is son of MasterPageB.Master.

I need to access to a label control put in the Content part of MasterPageB.Master.

I tried to fit the code that I usually use for one level (Master-Son) found at this page and I've write in Default.aspx.vb this code:

Code:

    Dim oContent As Content, oLabel as Label
      oContent = CType(Master.FindControl("Content1"), Content)
      If Not oContent Is Nothing Then
        oLabel = CType(oContent.FindControl("lblContatti"), Label)
      Endif

These are the definitions (just the relevant code) of MasterPageA.Master and MasterPageB.Master:
MasterPageA.Master

Code:

...cut...
            <asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
            </asp:ContentPlaceHolder>
...cut....

MasterPageB.Master

Code:

<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
                        <asp:Label ID="lblContatti" runat="server" Text="E-Mail" CssClass="lblSchedaArticolo"></asp:Label>
</asp:Content>
....
....

Any help is appreciated.
Best regards

Maurice

**gep13** · Jan 7th, 2010, 02:00 PM

Hey,

Have a look here:

http://aspalliance.com/1737_CodeSnip...ster_Pages.all

Gary

**motogpdesmo16** · Jan 7th, 2010, 04:04 PM

Hi Gary,
I've found the article during my search on the Internet.
Imagine that in the second master page I've this situation:

Code:

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:ContentPlaceHolder ID="ContentPlaceHolder2" runat=server>
</asp:ContentPlaceHolder>
</asp:Content>

and in the content page (default.aspx), I need to access at the label control.
I hope my explanation is clearer than the same of the first post!
Thank you

**gep13** · Jan 8th, 2010, 04:08 AM

Hey,

The technique is the same though. That label lives within the ContentPlaceHolder of the First Master Page, so from the actual content page, you have to go up through two master pages, and then start to come down again. This is code that I have just used, and know works.

First Master Page

Code:

<&#37;@ Master Language="VB" AutoEventWireup="false" CodeBehind="MasterPage.master.vb" Inherits="NestedMasterPages.MasterPage" %>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Outer Master Page</title>
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h3>Outer Master Page</h3>
        <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>

Second Master Page

Code:

<%@ Master Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeBehind="MasterPage2.master.vb" Inherits="NestedMasterPages.MasterPage2" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" 
Runat="Server">
<h3>Inner Master Page</h3>
<%-- This is the label I assume you are referring to --%>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:ContentPlaceHolder ID="ContentPlaceHolder2" runat=server>
</asp:ContentPlaceHolder>
</asp:Content>

Content Page

Code:

<%@ Page Language="vb"  MasterPageFile="~/MasterPage2.master" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="NestedMasterPages._Default" %>

<asp:Content ID="Content1" runat="server" 
contentplaceholderid="ContentPlaceHolder2">
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
<asp:Button ID="Button1" runat="server" Text="Button" />
</asp:Content>

Code Behind

Code:

Public Partial Class _Default
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        ' Outer Master Page
        Dim Outer_CP As ContentPlaceHolder
        Outer_CP = TryCast(Me.Master.Master.FindControl("ContentPlaceHolder1"),  _
        ContentPlaceHolder)

        Dim lbl As Label = TryCast(Outer_CP.FindControl("Label1"), Label)

        lbl.Text = "Text was changed inside nested master page!"
    End Sub
End Class

Hope that helps!!

Gary

**motogpdesmo16** · Jan 8th, 2010, 07:37 AM

Hi Gary,
it works well...

Thank's a lot!

**gep13** · Jan 8th, 2010, 08:04 AM

Hey,

Not a problem at all. Happy to help!

Gary

**furqanbutt** · Apr 8th, 2011, 05:46 PM

thx .. it works ...

**gep13** · Apr 9th, 2011, 07:29 AM

Originally Posted by furqanbutt

thx .. it works ...

Wow, this is an older thread! Glad that it helped you though!

Gary

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