Browser detection in ASP.NET

gcastner — Sun, 11 Feb 2007 22:01:00 GMT

Here is a code snippet for detecting in which Internet browser a user is viewing your site.

Note that I usually use two stylesheets. The first, standard.css, contains the styles interpreted the same way by all browsers. I then use a second stylesheet to add or change any styles rendered differently in different browsers.

In the head tag of the relevant page (a .master page would be a good location) add the following lines (assuming that you use two stylesheets as described above):

In the page_load sub of the same page, add the following code:

'Determine the correct css file depending on the browser

Dim httprequest1 As HttpBrowserCapabilities = Request.Browser

Select Case httprequest1.Browser

Case "IE"
   If httprequest1.Version = "6.0" Then
      stylesheet2.href = "ie6.css"
   End If

Case "Firefox", "Mozilla"
stylesheet2.href = "firefox.css"

Case Else
stylesheet2.Href = ""

End Select

In this example, only two browsers are detected but you could of course add more. You can also add additional versions to each browser.

Duck Bytes : Browser detection

Browser detection in ASP.NET