using System;

using System.IO;

using System.Threading;

public class Program

{

    public static void Main()

    {

        var exCount = 0;

        retry:

        try

        {

            Console.WriteLine("Trying... exCount: " + exCount);

            throw new IOException();

        }

        catch (IOException)

        {

            exCount++;

            if (exCount < 3)

            {

                Thread.Sleep(100);

                goto retry;

            }

            throw;

    }

    }

}