How to get user Browser name ( user-agent ) in Asp.net Core?

Question

Can you please let me know how to get the browser\'s name that the client is using in MVC 6, ASP.NET 5?

Answer 1

Install this .nuget package

create a class like this:

public static class YauaaSingleton
    {
        private static UserAgentAnalyzer.UserAgentAnalyzerBuilder Builder { get; }

        private static UserAgentAnalyzer analyzer = null;

        public static UserAgentAnalyzer Analyzer
        {
            get
            {
                if (analyzer == null)
                {
                    analyzer = Builder.Build();
                }
                return analyzer;
            }
        }

        static YauaaSingleton()
        {
            Builder = UserAgentAnalyzer.NewBuilder();
            Builder.DropTests();
            Builder.DelayInitialization();
            Builder.WithCache(100);
            Builder.HideMatcherLoadStats();
            Builder.WithAllFields();
        }


    }

in your controller you can read the user agent from http headers:

string userAgent = Request.Headers?.FirstOrDefault(s => s.Key.ToLower() == "user-agent").Value;

Then you can parse the user agent:

 var ua = YauaaSingleton.Analyzer.Parse(userAgent );

 var browserName = ua.Get(UserAgent.AGENT_NAME).GetValue();

you can also get the confidence level (higher is better):

 var confidence = ua.Get(UserAgent.AGENT_NAME).GetConfidence();