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

namespace Ch07Ex02
{
    class Program
    {
        static string[] eTypes = { "none", "simple", "index", "nested index" };
        static void Main(string[] args)
        {
            foreach (string eType in eTypes)
            {
                try
                {
                    Console.WriteLine("Main() try block reached.");
                    Console.WriteLine("ThrowException(\"{0}\")called.", eType);
                    ThrowException(eType);
                    Console.WriteLine("Main() try block continues.");
                }
                catch (System.IndexOutOfRangeException e)
                {
                    Console.WriteLine("Main() Systrm.IndexOutOfRangeException catch" + "block reached.Message:\n\"{0}\"", e.Message);
                }
                finally 
                {
                    Console.WriteLine("Main() finally block reached.");
                }
                Console.WriteLine();
            }
            Console.ReadKey();
        }
        static void ThrowException(string exceptionType)
        {
            Console.WriteLine("ThrowException(\"{0}\") reached.", exceptionType);
            switch (exceptionType)
            {
                case "none":
                    Console.WriteLine("Not throwing an exception.");
                    break;
                case "simple":
                    Console.WriteLine("Throwing System.Exception.");
                    throw(new System.Exception());
                    break;
                case "index":
                    Console.WriteLine("Throwing System.IndexOutOfRangeException.");
                    eTypes[4]="error";
                    break;
                case "nested index":
                    try
                    {
                        Console.WriteLine("ThrowException(\"nested index\")" + "try block reached.");
                        Console.WriteLine("ThrowException(\"index\")called.");
                        ThrowException("index");
                    }
                    catch
                    {
                        Console.WriteLine("ThrowException(\"nested index\")general" + "catch block reached.");
                    }
                    finally 
                    {
                        Console.WriteLine("ThrowException(\"nested index\")finally" + "block reached.");
                    }
                    break;
            }
        }
    }
}