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Friday, 15 February 2013

Select different CSS files based on IE version in ASP.NET

Determine the browser type from the HTTP request:
System.Web.HttpBrowserCapabilities browser = Request.Browser
Then render the page accordingly:
<% if (browser.Browser == "IE" && browser.MajorVersion == 6) { %>
  <link rel="stylesheet" type="text/css" href="style/ie6.css" media="screen" />
<% } else if (browser.Browser == "IE" && browser.MajorVersion == 7) { %>
  <link rel="stylesheet" type="text/css" href="style/ie7.css" media="screen" />
<% } else if (browser.Browser == "IE" && browser.MajorVersion == 8) { %>
  <link rel="stylesheet" type="text/css" href="style/ie8.css" media="screen" />
<% } %>
 
I believe you have to set the runat="server" attribute within the <head> element of the page for this to work.
This isn't a very good way of doing it though. A better way would be to do it client-side using either JavaScript or the method used in the question.
 
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