Check Browser version and vendor(C#)
<%@ Page Language="c#" %> <script Language="c#" runat="server"> void Page_Load(object source, EventArgs e) { if (!(IsPostBack)) { if (Request.Browser.Browser == "IE") { if (Request.Browser.MajorVersion < 6) { MyLabel.Text = "Time to upgrade Internet Explorer!"; } else { MyLabel.Text = "Your copy of Internet Explorer is up to date."; } } else { MyLabel.Text = "You're not using Internet Explorer"; } } } </script> <html> <body> <asp:Label id=MyLabel runat="server" Text=""/> </body> </html>