ASP.NETの中でどのようにユーザーのIEブラウザのバージョンを判断します

f   (   Request.Browser.MajorVersion   ==   6   )
    {
    // to do
    }
    ......................................................................................................................................
    private   void   Page_Load(object   sender,   System.EventArgs   e)
    {
    HttpBrowserCapabilities bc = new HttpBrowserCapabilities();
    bc   =   Request.Browser;
    Label1.text=bc.Platform   +   "            :"   +   bc.Type;
    }
    ......................................................................................................................................
    HttpBrowserCapabilities   bc   =   Request.Browser;
    Response.Write("
     :");
    Response.Write("        =   "   +
    bc.Type   +   "
");
    Response.Write("      =   "
    +   bc.Browser   +   "
");
    Response.Write("        =   "   +
    bc.Version   +   "
");
    Response.Write("       =   "   +
    bc.MajorVersion   +   "
");
    Response.Write("       =   "   +
    bc.MinorVersion   +   "
");
    Response.Write("       =   "   +
    bc.Platform   +   "
");
    Response.Write("        =   "   +
    bc.Beta   +   "
");
    Response.Write("Is   Crawler   =   "   +
    bc.Crawler   +   "
");
    Response.Write("Is   AOL   =   "   +   bc.AOL
    + "
");
    Response.Write("16     =   "   +
    bc.Win16   +   "
");
    Response.Write("32     =   "   +
    bc.Win32   +   "
");
    Response.Write("  Frame   =   "   +
    bc.Frames   +   "
");
    Response.Write("  Table   =   "   +
    bc.Tables   +   "
");
    Response.Write("  Cookies   =   "   +
    bc.Cookies   +   "
");
    Response.Write("  VB   Script   =   "   +
    bc.VBScript   +   "
");
    Response.Write("     JavaScript   =   "
    +   bc.JavaScript   +   "
");
    Response.Write("     Java   Applets   =
    "   +   bc.JavaApplets   +   "
");
    Response.Write("     ActiveX
    Controls   =   "   +   bc.ActiveXControls   +   "
");
    Response.Write("  CDF   =   "   +
    bc.CDF   +   "
");
    Response.Write(Request.UserAgent);
    Response.Write   ("
    language=<span style="color:#800000;">'</span><span style="color:#800000;">javascript</span><span style="color:#800000;">'</span>><span style="color:#008000;">//</span><span style="color:#008000;">      screenWidth=screen.widt</span>
    h;screenHeight=screen.height;");
    //       ：Response.Write
    (window.screen.height);
    //       ："+
    window.screen.width;
    //         ："+
    window.screen.availHeight;
    //         ："+
    window.screen.availWidth