dybamically apply css file

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hi all , i have created smalll web application using c#, and i have 2 css files,
i want to dynamically change the cssfiles, when certain condition is true,how to do this..

your answer will be great helpful to me

Posted 9-Oct-11 21:42pm

sameertm

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member60 · Answer 1 · 2011-10-09T21:46:00

Solution 1

try:

ASP.NET

<head>
<link id="MyStyleSheet" rel="stylesheet" type="text/css"  runat="server" />
</head>

in your Page_Load, simply add a "href" attribute as below:

VB

Page_Load(Sender As Object, E As EventArgs)
If (!IsPostBack)
 MyStyleSheet.Attributes.Add("href","/css/flostyle.css")

Posted 9-Oct-11 21:46pm

member60

Updated 12-Oct-11 0:38am

v2

Comments

sameertm 10-Oct-11 3:55am

its showing error that , MyStyleSheet is does not exists in the current context

member60 10-Oct-11 4:04am

add the MyStyleSheet in head section this work definitely

dreamz9 · Answer 2 · 2011-10-09T22:07:00

Try this :

<head>
<script type="text/javascript">
if (Condition)
{
           document.write("<link href='Stylesheet.css' rel='stylesheet' type='text/css' media='screen' />")
}
</script>
</head>

or

stringbuilder str = new stringbuilder;
str.append("Above Javascript");
label1.text = str.toString;

or

MyStyleSheet.Attributes.Add("href","Stylesheet.css")

dreamz9 · Answer 3 · 2011-10-09T22:18:00

declare 2 labels
label1 for javascript code & label2 for postback reference

from codebehind you can use

if (condition)
{
label2.text = "'Stylesheet.css'" //css path
}


stringbuilder str = new stringbuilder;
str.append("<script type="text/javascript"> +
"if (Condition)" + 
""{document.write('<link href="
<big>label2.text</big> +
" rel='stylesheet' type='text/css' media='screen' />')}" +
"</script>" +
");</script>") 
label1.text = str.toString;

Muralikrishna8811 · Answer 4 · 2011-10-09T22:40:00

Hi,

you can use this type of code for that

HTML

<%if (Session["lbl"].ToString() != "") {
  %>
<link href="Styles/basic.css" rel="stylesheet" type="text/css" />
  <%
  } else {
  %>
<link href="Styles/basic_ie.css" rel="stylesheet" type="text/css" />
  <%
  }
       %>

you can change whatever you want by following this way

All the Best

dybamically apply css file

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