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C# C# Streams and Data Processing Parsing Data Working with Enums

Daniel Hildreth
Daniel Hildreth
16,170 Points
Posted by Daniel Hildreth
Daniel Hildreth
16,170 Points

C# Working With Enums

I don't know what I'm doing wrong here. I seem to have it set up as what the videos showed us. Can someone help me out please? This is the error I'm getting:

Program.cs(20,46): error CS0103: The name `condition' does not exist in the current context
Program.cs(20,22): error CS0453: The type `' must be a non-nullable value type in order to use it as type parameter `TEnum' in the generic type or method `System.Enum.TryParse(string, out TEnum)'
Program.cs(22,53): error CS0103: The name `condition' does not exist in the current context
Compilation failed: 3 error(s), 0 warnings
Program.cs 
using System;
using System.IO;

namespace Treehouse.CodeChallenges
{
    public class Program
    {
        public static void Main(string[] arg)
        {
        }

        public static WeatherForecast ParseWeatherForecast(string[] values)
        {
            var weatherForecast = new WeatherForecast();
            DateTime timeOfDay;
            if (DateTime.TryParse(values[1], out timeOfDay))
            {
                weatherForecast.TimeOfDay = timeOfDay;
            }
            if (Enum.TryParse(values[2], out condition))
                    {
                        weatherForecast.Condition = condition;
                    }
            return weatherForecast;
        }
    }
}
WeatherForecast.cs 
using System;

/* Sample CSV Data 

weather_station_id,time_of_day,condition,temperature,precipitation_chance,precipitation_amount
HGKL8Q,06/11/2016 0:00,Rain,53,0.3,0.03
HGKL8Q,06/11/2016 6:00,Cloudy,56,0.08,0.01
HGKL8Q,06/11/2016 12:00,PartlyCloudy,70,0,0
HGKL8Q,06/11/2016 18:00,Sunny,76,0,0
HGKL8Q,06/11/2016 19:00,Clear,74,0,0
*/

namespace Treehouse.CodeChallenges
{
    public class WeatherForecast
    {
        public string WeatherStationId { get; set; }
        public DateTime TimeOfDay { get; set; }
        public Condition Condition { get; set; }
    }

    public enum Condition
    {
        Rain,
        Cloudy,
        PartlyCloudy,
        PartlySunny,
        Sunny,
        Clear
    }
}
Daniel Hildreth
Daniel Hildreth
16,170 Points
Daniel Hildreth
Daniel Hildreth
16,170 Points

Thanks Chris Atchley. I think I may have had that part of the code, otherwise I would not have passed the second part of this code challenge. However, when I went on to the third challenge it did not save that bit of information in the code.

2 Answers

Chris Atchley
Chris Atchley
18,468 Points

You need to create your Condition variable before you can use it.

Condition condition;
            if (Enum.TryParse(values[2], out condition))
            {
                weatherForecast.Condition = condition;
            }
           ```
Sara Rena Anderson
Sara Rena Anderson
15,045 Points
Sara Rena Anderson
Sara Rena Anderson
15,045 Points 
using System;
using System.IO;

namespace Treehouse.CodeChallenges
{
    public class Program
    {
        public static void Main(string[] arg)
        {
        }

        public static WeatherForecast ParseWeatherForecast(string[] values)
        {
            var weatherForecast = new WeatherForecast();
            DateTime timeOfDay;
            if (DateTime.TryParse(values[1], out timeOfDay))
            {
                weatherForecast.TimeOfDay = timeOfDay;
            }
Condition condition;
            if (Enum.TryParse(values[2], out condition))
            {
                weatherForecast.Condition = condition;
            }
            return weatherForecast;
        }
    }
}