public IActionResult Detail(string id, string tempType) { string tempTypeSession = HttpContext.Session.GetString("tempTypeSession"); if (string.IsNullOrEmpty(tempTypeSession)) { HttpContext.Session.SetString("tempTypeSession", "Fahrenheit"); } if (!string.IsNullOrEmpty(tempType)) { HttpContext.Session.SetString("tempTypeSession", tempType); } tempTypeSession = HttpContext.Session.GetString("tempTypeSession"); if (tempTypeSession == "Fahrenheit") { ViewData["tempType"] = "Fahrenheit"; } if (tempTypeSession == "Celsius") { ViewData["tempType"] = "Celsius"; } ParkPlusWeather parkPlusWeather = new ParkPlusWeather(); parkPlusWeather.Park = parkDAO.Detail(id); parkPlusWeather.Weathers = weatherDAO.GetAllWeathers(id); return(View(parkPlusWeather)); }