Browser Detection In Asp.Net

Browser Detection In Asp.Net

In this post i'm explaining how to detect browser type, browser name, version, cookies support and javascript version using c# or javascript in asp.net.

Detecting browser using C# is quite simple in asp.net, below mention code can detect all above mentioned features.

01protected void Page_Load(object sender, EventArgs e)

02    {

03        System.Web.HttpBrowserCapabilities browserDetection = Request.Browser;

04        lblBrowserType.Text = browserDetection.Type;

05        lblBrowserName.Text = browserDetection.Browser;

06        lblBrowserVersion.Text = browserDetection.Version;

07 

08        lblBrowserCookieSupport.Text = browserDetection.Cookies.ToString();

09        lblBrowserJavaScriptVersion.Text = browserDetection.EcmaScriptVersion.ToString();

10 

11    }

To detect browser through javascript we can write code as mentioned below 

   1:  var nVer = navigator.appVersion;

   2:  var nAgt = navigator.userAgent;

   3:  var browserName  = navigator.appName;

   4:  var fullVersion  = ''+parseFloat(navigator.appVersion); 

   5:  var majorVersion = parseInt(navigator.appVersion,10);

   6:  var nameOffset,verOffset,ix;

   7:   

   8:  // In Opera, the true version is after "Opera" or after "Version"

   9:  if ((verOffset=nAgt.indexOf("Opera"))!=-1) {

  10:   browserName = "Opera";

  11:   fullVersion = nAgt.substring(verOffset+6);

  12:   if ((verOffset=nAgt.indexOf("Version"))!=-1) 

  13:     fullVersion = nAgt.substring(verOffset+8);

  14:  }

  15:  // In MSIE, the true version is after "MSIE" in userAgent

  16:  else if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {

  17:   browserName = "Microsoft Internet Explorer";

  18:   fullVersion = nAgt.substring(verOffset+5);

  19:  }

  20:  // In Chrome, the true version is after "Chrome" 

  21:  else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {

  22:   browserName = "Chrome";

  23:   fullVersion = nAgt.substring(verOffset+7);

  24:  }

  25:  // In Safari, the true version is after "Safari" or after "Version" 

  26:  else if ((verOffset=nAgt.indexOf("Safari"))!=-1) {

  27:   browserName = "Safari";

  28:   fullVersion = nAgt.substring(verOffset+7);

  29:   if ((verOffset=nAgt.indexOf("Version"))!=-1) 

  30:     fullVersion = nAgt.substring(verOffset+8);

  31:  }

  32:  // In Firefox, the true version is after "Firefox" 

  33:  else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {

  34:   browserName = "Firefox";

  35:   fullVersion = nAgt.substring(verOffset+8);

  36:  }

  37:  // In most other browsers, "name/version" is at the end of userAgent 

  38:  else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) < 

  39:            (verOffset=nAgt.lastIndexOf('/')) ) 

  40:  {

  41:   browserName = nAgt.substring(nameOffset,verOffset);

  42:   fullVersion = nAgt.substring(verOffset+1);

  43:   if (browserName.toLowerCase()==browserName.toUpperCase()) {

  44:    browserName = navigator.appName;

  45:   }

  46:  }

  47:  // trim the fullVersion string at semicolon/space if present

  48:  if ((ix=fullVersion.indexOf(";"))!=-1)

  49:     fullVersion=fullVersion.substring(0,ix);

  50:  if ((ix=fullVersion.indexOf(" "))!=-1)

  51:     fullVersion=fullVersion.substring(0,ix);

  52:   

  53:  majorVersion = parseInt(''+fullVersion,10);

  54:  if (isNaN(majorVersion)) {

  55:   fullVersion  = ''+parseFloat(navigator.appVersion); 

  56:   majorVersion = parseInt(navigator.appVersion,10);

  57:  }

  58:   

  59:  document.write(''

  60:   +'Browser name  = '+browserName+'<br>'

  61:   +'Full version  = '+fullVersion+'<br>'

  62:   +'Major version = '+majorVersion+'<br>'

  63:   +'navigator.appName = '+navigator.appName+'<br>'

  64:   +'navigator.userAgent = '+navigator.userAgent+'<br>'

  65:  )