how do I detect user operating system

Question

I have the following code to obtain user details:

HttpBrowserCapabilities bc = HttpContext.Current.Request.Browser; string UserAgent = HttpContext.Current.Request.UserAgent;  ENT_TrackingData ret = new ENT_TrackingData() {     IPAddress = HttpContext.Current.Request.UserHostAddress,     Browser = bc.Browser + " " + bc.Version,                     DateStamp = DateTime.Now,     PageViewed = HttpContext.Current.Request.Url.AbsolutePath,     NodeId = UmbracoHelper.GetCurrentNodeID(),     IsMobileDevice = IsMobileDevice(UserAgent),     Platform = bc.Platform }; 

This works great but I noticed that the Platform always says windows NT for my machine not Windows 7. Is there any way to detect this type of information in ASP.Net?

Answer 1

Here's what I came up with and it seems to work fairly well:

public String GetUserEnvironment(HttpRequest request) {     var browser = request.Browser;     var platform = GetUserPlatform(request);     return string.Format("{0} {1} / {2}", browser.Browser, browser.Version, platform); }  public String GetUserPlatform(HttpRequest request) {     var ua = request.UserAgent;      if (ua.Contains("Android"))         return string.Format("Android {0}", GetMobileVersion(ua, "Android"));      if (ua.Contains("iPad"))         return string.Format("iPad OS {0}", GetMobileVersion(ua, "OS"));      if (ua.Contains("iPhone"))         return string.Format("iPhone OS {0}", GetMobileVersion(ua, "OS"));      if (ua.Contains("Linux") && ua.Contains("KFAPWI"))         return "Kindle Fire";      if (ua.Contains("RIM Tablet") || (ua.Contains("BB") && ua.Contains("Mobile")))         return "Black Berry";      if (ua.Contains("Windows Phone"))         return string.Format("Windows Phone {0}", GetMobileVersion(ua, "Windows Phone"));      if (ua.Contains("Mac OS"))         return "Mac OS";      if (ua.Contains("Windows NT 5.1") || ua.Contains("Windows NT 5.2"))         return "Windows XP";      if (ua.Contains("Windows NT 6.0"))         return "Windows Vista";      if (ua.Contains("Windows NT 6.1"))         return "Windows 7";      if (ua.Contains("Windows NT 6.2"))         return "Windows 8";      if (ua.Contains("Windows NT 6.3"))         return "Windows 8.1";      if (ua.Contains("Windows NT 10"))         return "Windows 10";      //fallback to basic platform:     return request.Browser.Platform + (ua.Contains("Mobile") ? " Mobile " : ""); }  public String GetMobileVersion(string userAgent, string device) {     var temp = userAgent.Substring(userAgent.IndexOf(device) + device.Length).TrimStart();     var version = string.Empty;      foreach (var character in temp)     {         var validCharacter = false;         int test = 0;          if (Int32.TryParse(character.ToString(), out test))         {             version += character;             validCharacter = true;         }          if (character == '.' || character == '_')         {             version += '.';             validCharacter = true;         }          if (validCharacter == false)             break;     }      return version; }