dictionary4.cs

using System;
using System.Collections.Generic;

namespace DictionaryTraining
{
    public class Program
    {
        static Dictionary<ReportType, Func<int, string>> dictReports = new Dictionary<ReportType, Func<int, string>>();
        static void Main(string[] args)
        {
            Reporter reporter = new Reporter();
            dictReports.Add(ReportType.Daily, new Func<int, string>(reporter.GetDailyReport));
            dictReports.Add(ReportType.Weekly, new Func<int, string>(reporter.GetWeeklyReport));
            dictReports.Add(ReportType.Monthly, new Func<int, string>(reporter.GetMonthlyReport));
            dictReports.Add(ReportType.Annual, new Func<int, string>(reporter.GetAnnualReport));

            dictReports[ReportType.Daily](60);

            Console.ReadLine();
        }
    }

    public class Reporter
    {
        public string GetDailyReport(int dayOfYear)
        {
            Console.WriteLine("Daily report is preparing...");
            return "report of day: " + dayOfYear;
        }

        public string GetWeeklyReport(int weekOfYear)
        {
            Console.WriteLine("Weekly report is preparing...");
            return "report of week: " + weekOfYear;
        }

        public string GetMonthlyReport(int monthOfYear)
        {
            Console.WriteLine("Monthly report is preparing...");
            return "report of month: " + monthOfYear;
        }

        public string GetAnnualReport(int year)
        {
            Console.WriteLine("Annual report is preparing...");
            return "report of year: " + year;
        }
    }

    enum ReportType
    {
        Daily,
        Weekly, 
        Monthly,
        Annual
    }
}