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Answer 1

+1 A:

I would suggest storing the stylesheet selection in the session so you don't have to rely on the querystring key being present all the time. You can check the session in Page_Load and add the appropriate stylesheet reference. It sounds like this is a temporary/development situation, so go with whatever is easy and works.

if (!String.IsNullOrEmpty(Request.QueryString["css"]))
  Session.Add("CSS",Request.QueryString["css"]);

palmsey 2008-08-07 18:56:47

Answer 2

+8 A:

In Asp.net 3.5, you should be able to set up the Link tag in the header as a server tag. Then in the codebehind you can set the href property for the link element, based on a cookie value, querystring, date, etc.

In your aspx file:

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

And in the Code behind:

protected void Page_Load(object sender, EventArgs e) {
  string stylesheetAddress = // logic to determine stylesheet
  linkStyles.Href = stylesheetAddress;
}

Yaakov Ellis 2008-08-07 19:00:58

Thanks, didn't think of this, but .NET wasn't playing nice with this:<link rel="stylesheet" href="/style.css<%= VersionQueryString %>" type="text/css" />

Aaron 2009-05-22 15:54:02

Great idea, and by far the most "clean" solution suggested :)

Moulde 2009-06-04 22:32:03

Answer 3

+3 A:

You should look into ASP.NET themes, that's exactly what they're used for. They also allow you to skin controls, which means give them a set of default attributes.

Shawn Simon 2008-08-07 19:01:05

Answer 4

A:

I would do the following:

www.website.com/?stylesheet=new.css

Then in your ASP.NET code:

if (Request.Querystring["stylesheet"] != null) {
    Response.Cookies["stylesheet"].Value = Request.QueryString["stylesheet"];
    Response.Redirect(<Current Page>);
}

Then where you define your stylesheets:

if (Request.Cookies["stylesheet"] != null) {
    // New Stylesheet
} else {
    // Default
}

GateKiller 2008-08-07 19:02:00

what do you do when the user navigates to another page? comes in from an outside link?

Jason 2009-04-03 23:17:00

Answer 5

A:

@modesty I like the concept of themes, but they don't work well with conditional comments: http://adam.kahtava.com/journal/2006/11/09/The+Problems+With+Themes+Skins.aspx

Jon Galloway 2008-08-07 22:17:32

Answer 6

A:

Take a look at http://conditional-css.com/ They have a ashx handler that can read the conditional directives and emit the css for that browser.

Jafin 2010-09-30 03:41:29

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How to set up a CSS switcher in ASP.NET

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