class Processor
{
    public void CopyData() =>
        CopyData(Try.Slow);

    public void CopyData(Try loop) =>
        loop.Execute(() =>
            File.Copy(@"ca.txt", @"c:b.txt"));
    }

public abstract class Try
{
    public static Try Repeat(params int[] delays) => new Repeat(delays);
    public static readonly Try Never = Repeat();
    public static readonly Try Once = Repeat(0);
    public static readonly Try Slow = Repeat(0, 500, 1500, 4500, 12000);
    public static readonly Try Fast = Repeat(0, 50, 150, 450, 1200);
    public abstract void Execute(Action action);
}

class Repeat : Try
{
    IReadOnlyList<int> Delays { get; }

    public Repeat(params int[] delays)
    {
        Delays = delays;
    }

    public override void Execute(Action action)
    {
        for(int i=0; i< Delays.Count; i++)
            try
            {
                Thread.Sleep(Delays[i]);
                action();
                return;
            }
            catch
            {
                if (i == Delays.Count - 1)
                    throw;
            }
    }
}