C# - How To Retrieve A Control In A Master Page From Content Page
Feb 23, 2011
when I asked recenlty a question about how To retrive a control in a Master Page from Content Page. Many peoples use this code from my Content Page:
Label lbl = this.Master.Page.FindControl("uxLabel") as Label; //Note any server controls defined in the master page could be not be accessible even after a cast is performed, because they could be marked as protected
This approach certainly works, I also realise that is available a strongly-typed solution that doesn't involve casting the Master property.
In the Master Page place:
[code]....
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Similar Messages:
Dec 7, 2010
I have a master page with a form on it. It's a people search form. When the user clicks on the search button it goes to the search results page that uses the same master page. With the code below I get the info off the master of the current page. Howdo I grab that info from the first page?
Here's the code:
Master page:
< FORM id=formEmpSearch method=post action=~/About/peopleSearch.aspx runat="server">
< asp:TextBox style="WIDTH: 153px; HEIGHT: 12px" id=txtSearchName onfocus="this.value=''" runat="server" CssClass="searchBox">
Master Code Behind page:
Imports System
Imports System.Web.UI
Imports System.Web.UI.WebControls
Partial Class mstrIntranet
Inherits System.Web.UI.MasterPage
Public Property mSearchName()
Get
Return txtSearchName.tex
End Get
Set(ByVal value)
txtSearchName.text = value
End Set
End Property
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
txtSearchName.Text = "People Search"
End Sub End Class
Search Results Code Behind page:
Partial Class PeopleSearch2
Inherits System.Web.UI.Page
Public SearchName As String
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim mpTextbox As TextBox
mpTextbox = CType(Master.FindControl("txtSearchName"), TextBox)
SearchName = mpTextbox.Text
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Jan 24, 2011
I have a javascript function on my Master page, how do I access it with a dropdownlist of a content page. Not from codebehind, I can do that, but from the control itself such as the onSelectedIndexChanged event.
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Jun 26, 2010
how to remove master page prefix from control ID after rendering content page
i m using master page in my web application, i am using a java script that works on one of my div id and i am genrating div at run time using C# code, problem is that one one of my content page rendred a prefix ct100 attached on that div,
How can i remove that prefix from my server side control (assume panel) id
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Oct 16, 2010
I have a codebehind.vb for a master page from which I'm trying to find a hiddenfield in the content page. I was finding it like this without a hitch...
[Code]....
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Dec 2, 2013
this hierarchy of master page
|--main.master
|-- index.aspx
|-- user.master
|-- login.aspx
<asp:LoginView ID="HeadLoginView" runat="server" EnableViewState="false">
<AnonymousTemplate>
[ <a href="~/PageCommon/login.aspx" id="HeadLoginStatus" runat="server" color="#87cfe6">Log In</a> ]
[CODE]....
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Jan 14, 2010
I have a MasterPage where I use the menu control. Clicking a menu item loads a new content page. That part works fine.
I would like to use staticselected style to change the look of the selected menu item. However, when the new content page loads, the staticselectedsyle formatting does not work.
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Jan 27, 2010
I have a user control in the master of my website and I want change some property of that control from the content page.
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Aug 5, 2010
I am attempting to access a textbox control on a master page from a code behind base class but having problems.
I have 3 levels of master pages. m1.master is the master page for m2.master which is the master page for m3.master.
m3.master has a textbox as shown below
<%Master
Language="C#"
MasterPageFile="~/m2.master"
AutoEventWireup="true"
CodeFile="M3.master.cs"
Inherits="M3"
%>
<asp:Content
ID="Content5"
ContentPlaceHolderID="M2"
Runat="Server">
<asp:TextBox
ID="text1"
runat="server"
></asp:TextBox>
<asp:ContentPlaceHolder
ID="M3"
runat="Server"></asp:ContentPlaceHolder>
</asp:Content>
I have a content page c1.aspx that uses m3.master as its master page as shown below:
<%@
Page
Title=""
Language="C#"
MasterPageFile="~/m3.master"
AutoEventWireup="true"
CodeFile="c1.aspx.cs"
Inherits="_c1"
%>
<%@
MasterType
VirtualPath="~/m3.master"
%>
<asp:Content
ID="Content1"
ContentPlaceHolderID="M3"
Runat="Server">
</asp:Content>
My content page codebehind class inherits from a base class BaseForm
public partial
class
_c :
BaseForm{}
The problem that i am having is that I cannot access the texbox from the class BaseForm. The BaseForm code is as follows:
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public...........
I'm getting a null reference exception for txt1
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Mar 8, 2010
1. I have master page with script manager and contentPlaceHolder. One TextArea is outside ContentPlaceHolder.
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:ContentPlaceHolder id="ContentPlaceHolder1" runat="server">
[code]....
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Oct 9, 2013
how to upload image from child page to image field on master page in asp.net vb.
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Sep 25, 2012
I have a marqueein master page without any updatepanel .Am updating the content of marquee from content page but it does not reflect. e.g:
((HtmlGenericControl)Master.FindControl("maq1")).InnerText =" fdf fgf gf";
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May 7, 2015
I have hyperlink in page
<asp:HyperLink ID="HyperLink1" runat="server" class="lblMenuMessage" NavigateUrl="~/Admin/صندوق-پیام.aspx">صندوق پیام</asp:HyperLink>
and css
.lblMenuMessage
{
float:right;
text-align:right;
width:150px;
margin:0 12px 0 0;
color:white;
text-decoration:none;
}
and I want change it's color in behind code so I wrote:
(this.Master.FindControl("HyperLink1") as HtmlGenericControl).Style["color"] = "black";
but below error happen:
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.Source Error:
Line 13:
Line 14: (this.Master.FindControl("ADMenuMessage") as HtmlGenericControl).Style["background-image"] = Page.ResolveUrl("~/Image/ADactivmenu.png");
Line 15: (this.Master.FindControl("HyperLink1") as HtmlGenericControl).Style["color"] = "black";
Line 16: }
Line 17: }
how I can change hyperlink textcolor in behind code?
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Dec 8, 2012
How to access a control declared in a Master Page in a content page.I have a ModalPopUpExtender in Master Page and i want to access it from a content page, how can i do that.
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Feb 25, 2011
Can I modify the properties of a content page control from an event fired from the master page?create a delegate and event on master page wire up the master page in the content page create the event handler (function) on the content page modify for example:
contents of the Text property of a textbox render a control visible (or hidden) etc...
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Jan 16, 2011
I have a control in a content page that I want to find the width and left attributes of the style. I am trying to find this from Javascript code that exists on the Master Page. How do I do that?
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Feb 10, 2010
I have a web page (Orders.aspx) that gets some orders and show them in a Gridview .The orders list I get from DB is depend on a field named Status. The page has a master page that contains a Tab user control. The user control has several tabs and every tab has a different Status. Therefor, when the user clicks on every tab, I want to pass a value as status to my content page (Orders.aspx) and then select the orders from DB based on status.
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Dec 11, 2013
I looked at your example URL....I have ScriptManager in masterpage how call ScriptManager from masterpage in editorPage.aspx if (Script Manager 1.IsInAsyncPostBack)
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Mar 20, 2010
i want to give id of dropdowncontrol inside master page, how can i assign this control id in trigger of updatepanel inside content page
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Nov 9, 2010
I have user control in the master page. user control code behind page having public property called SetValue.
Now I want to set the value from content page .
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Jan 24, 2014
On masterPage i have button btnTest, how hide button from masterPage on userControl.ascx
example:
btnSecondPage_click
{
btnTest.visible = false;
}
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Jun 25, 2010
How can I hide a user control on the master page from a content page? This is code I have on my content page's load.
Dim banner As UserControl = DirectCast(Master.FindControl("uc_banner1"), UserControl)
banner.Visible = True
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Dec 16, 2010
Does any know why I can't access the my custom user control StatusBar which is declared inside a masterPage?
In the ContentPage, I tried referencing the control this way "this.Site.stastusBar" and "this.Master.Status" and neither one works. Both instellisense warns me that "statusBar" does not exist.
Below is my Aspx code and code-behind:
[code]....
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Oct 1, 2010
I have a web user control book.ascx and a formview:
<formview runat="server" id="fv">
<ItemTemplate>
<asp:Label runat="server" id="bookID" Text='<%# Eval ("bookId") %>' />
</ItemTemplate>
</FormView>
This formview is databind dynamically.
Now i have a Content page Default.aspx:
<%@ Register src="Book.ascx" tagname="Book" tagprefix="uc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<uc1:Book id="book1" runat="server"/>
<asp:Label runat="server" id="lblBookId" />
</asp:Content>
I want to get the value of the label from web user control to a default.aspx page.
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May 11, 2010
There need to read selected value from drop down list which is in user control (user control is placed in master page) in contect page.
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