using System;

using System.Threading;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

            Task[] tasks = new Task[5];

            for (int ctr = 0; ctr <= 4; ctr++)

            {

                int factor = ctr;

                tasks[ctr] = Task.Run(() =>

                {

                    Thread.Sleep(factor*250 + 1000);

                    throw new Exception();

                });

            }

            int index = Task.WaitAny(tasks);

            Console.WriteLine("Wait ended because task #{0} completed.",

                              tasks[index].Id);

            Console.WriteLine("\nCurrent Status of Tasks:");

            foreach (var t in tasks)

                Console.WriteLine("   Task {0}: {1}", t.Id, t.Status);

​

            return;

    }

}