using System;

public class Program

{

    static string[] eTypes = { "none", "simple", "index", "nested index", "filter" };

    static void ThrowException(string exceptionType)

    {

        Console.WriteLine($"ThrowException(\"{exceptionType}\") reached."); 

        switch (exceptionType) 

        {

            case "none": 

                Console.WriteLine("Not throwing an exception."); 

            break;

            case "simple": 

                Console.WriteLine("Throwing System.Exception."); 

                throw new System.Exception();

                Console.WriteLine("Throwing System.IndexOutOfRangeException.");

            case "index":

                eTypes[5] = "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; 

            case "filter":

                try 

                {

                    Console.WriteLine("ThrowException(\"filter\") " + "try block reached.");

                    Console.WriteLine("ThrowException(\"index\") called."); ThrowException("index");

                } 

                catch 

                {

                    Console.WriteLine("ThrowException(\"filter\") general" + " catch block reached.");

                } 

            break;

            }

    }

    public static void Main()

    {

        foreach (string eType in eTypes) 

        {

            try 

            {

                Console.WriteLine("Main() try block reached."); 

                Console.WriteLine($"ThrowException(\"{eType}\") called."); 

                ThrowException(eType); 

                Console.WriteLine("Main() try block continues.");   // Line 23

            } 

            catch (System.IndexOutOfRangeException e) 

            {

                Console.WriteLine("Main() FILTERED System.IndexOutOfRangeException" + $"catch block reached. Message:\n\"{e.Message}\");

            } 

            catch (System.IndexOutOfRangeException e)   // Line 32 

            {

                Console.WriteLine("Main() System.IndexOutOfRangeException catch " + $"block reached. Message:\n\"{e.Message}\");

            } catch 

            {

                Console.WriteLine("Main() general catch block reached.");

            } finally 

            {

                Console.WriteLine("Main() finally block reached."); 

                Console.WriteLine();

            }

        } Console.ReadKey();

    }

}