Dictionary Switch - Proves that you can use a dictionary to work the same as a switch making it easier to maintain and more flexible.

DataChecker.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DictionarySwitch
{
    public class DataChecker
    {
        private IDataModifier dataModifier;
        private Dictionary<string, Func<int, int>> dictionary;

        public DataChecker(IDataModifier dm) {
            dataModifier = dm;
            GenerateDictionary();
        }

        public int CheckData(string data, int val)
        {
            if (dictionary.ContainsKey(data)){
                return dictionary[data].Invoke(val);
            }

            return 0;
        }

        private void GenerateDictionary()
        {
            dictionary = new Dictionary<string, Func<int, int>>
            {
                {"yes", dataModifier.Yes },
                {"no", dataModifier.No },
                {"maybe", dataModifier.Maybe },
                {"blahblah", dataModifier.Maybe },
                {"haha", dataModifier.Haha },
                {"I don't know", dataModifier.IDontKnow },
                {"stuff", dataModifier.Stuff },
                {"sometimes", dataModifier.SomeTimes },
                {"whenever", dataModifier.Whenever },
                {"never", dataModifier.Never },
                {"always", dataModifier.Always }
            };
        }
    }
}

DataModifier.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DictionarySwitch
{
    public class DataModifier : IDataModifier
    {
        public int Always(int val)
        {
            return val + 9;
        }

        public int BlahBlah(int val)
        {
            return val - 99;
        }

        public int Haha(int val)
        {
            return val + 100;
        }

        public int IDontKnow(int val)
        {
            return val + 432;
        }

        public int Maybe(int val)
        {
            return val - 1;
        }

        public int Never(int val)
        {
            return val--;
        }

        public int No(int val)
        {
            return val + 4;
        }

        public int SomeTimes(int val)
        {
            return val + 0;
        }

        public int Stuff(int val)
        {
            return val - 2;
        }

        public int Whenever(int val)
        {
            return val++;
        }

        public int Wherever(int val)
        {
            return val++;
        }

        public int Yes(int val)
        {
            return val + 2;
        }
    }
}

IDataModifier.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DictionarySwitch
{
    public interface IDataModifier
    {
        int Yes(int val);
        int No(int val);
        int Maybe(int val);
        int BlahBlah(int val);
        int Haha(int val);
        int IDontKnow(int val);
        int Stuff(int val);
        int SomeTimes(int val);
        int Whenever(int val);
        int Wherever(int val);
        int Never(int val);
        int Always(int val);
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DictionarySwitch
{
    public static class Program
    {
        public static DataChecker checker = new DataChecker(new DataModifier());

        static void Main(string[] args)
        {
            DictionarySwitch();
            Console.ReadKey();
        }

        public static void DictionarySwitch()
        {
            int val = checker.CheckData("yes", 0);
            Console.WriteLine(val.ToString());
        }
    }
}