check the request comes from which operating system used by user in asp net core
string device = getOSInfo();
public String getOSInfo()
{
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 (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;
}