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div server control - set visibility

Posted on 2006-07-13
5
Medium Priority
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Last Modified: 2012-06-22
I have created a master page for my site and have a div server contorl:

<div id="leftcolumn" runat="server">'

I want to be able to set the visibility of this control for my different pages.

Whenever the a page renders, the source shows:

<div id="ct100_leftcolumn">

So, first off, the styles for the control don't apply because the id is different than what I specified when the page renders.  Secondly, I can't set the visibility for the control in the code-behind.

What is the appropriate way to handle this?

0
Comment
Question by:-Dman100-
5 Comments
 
LVL 5

Expert Comment

by:vinodhsomasekharan
ID: 17106028
Hai,

From serverside u can Remove/set the visibility of the div control by
myDiv.Style.Add("visibility", "hidden")
myDiv.Style.Add("visibility", "visible")

Hope this helps

Regards
Vinodh

0
 
LVL 10

Expert Comment

by:orbulat
ID: 17106041
the source shows "ct100_leftcolumn" because it's inside another control like user control or place holder / datagrid ..etc....

of u can update your javascript function to reference the id "ct100_leftcolumn"

as vinodh said, u can use leftcolumn.Style.Add("xxxx","xxxxx"); or leftcolumn.Attributes.Add("xxxx","xxxxx");
and remove leftcolumn.Attributes.Remove("xxxx");
0
 

Author Comment

by:-Dman100-
ID: 17106134
Would a master page be considered another control?  The div server control sits inside the master page.

Here is how my master page looks:

<%@ Master Language="C#" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
 <title>Company Title</title>
 <link href="styles.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="container">
<div id="topnav">
<table cellSpacing="0" cellPadding="0" border="0">
<colgroup span="1" align="left" width="50%">
</colgroup>
<colgroup span="1" align="right" width="50%">
</colgroup>
<tr>
<td>&nbsp;</td>
<td>
<form style="MARGIN: 0px" name="frmSearch" action="" method="post">
Search <input type="text" size="25" name="txtQuery"> <A href="javascript:document.frmSearch.submit()">
<IMG src="images/go.gif" align="absMiddle" border="0"></A>
</form>
</td>
</tr>
</table>
</div>
<div id="header">
<table border="0" cellpadding="0" cellspacing="0">
<colgroup width="25%" bgcolor="#ffffff" span="1">
</colgroup>
<colgroup width="75%" span="1">
</colgroup>
<tr>
<td>
<img src="images/CL_4C_75px.gif" alt="CompassLearning: Better Technology for Improved Student Achievement">
</td>
<td class="hdrgradient">&nbsp;</td>
</tr>
</table>
</div>
<div id="main">
<div id="leftcolumn" runat="server">This is the left column navigation bar</div>
<div id="rightcolumn" runat="server">
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
</div>
<div id="footer">This is where the footer goes</div>
</div>
</body>
</html>


So, when I create new pages and add the MasterPageFile in the Page directive, I want to be able to control the visibility of the <div id="leftcolumn" runat="server"> in the MasterPageFile and turn on or off the visibility of the div server control.
0
 

Author Comment

by:-Dman100-
ID: 17106163
As a follow-up, I tried the following in the code-behind for the pages I want to turn off the visibility of the leftcolumn div:

public partial class index : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        leftcolumn.Style.Add("visibility", "hidden");
    }
}

Which gave me the error: 'leftcolumn does not exist in the current context'
0
 
LVL 7

Accepted Solution

by:
pradeepsudharsan earned 2000 total points
ID: 17106410
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