Request Entity Too Large Web API issue

Please put the below code on OnStart Method.

config.MaxReceivedMessageSize = 2147483647; // use config for this value

  protected override void OnStart(string[] args)
        {
            //while (!Debugger.IsAttached) Thread.Sleep(1000);

            var config = new HttpSelfHostConfiguration("http://localhost");
            config.MaxReceivedMessageSize = 2147483647; // use config for this value
            config.Routes.MapHttpRoute(
               name: "",
               routeTemplate: "{controller}/{action}/{id}",
               defaults: new { id = RouteParameter.Optional }
           );
            HttpSelfHostServer server = new HttpSelfHostServer(config);
            server.OpenAsync().Wait();
        }