using System;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var task1 = DomeSomething("");

        var task2 = DomeSomething("hello");

        var tasks = new[] {task1, task2};

        try {

            var allTasks = Task.WhenAll(tasks);

        var result = allTasks.GetAwaiter().GetResult();

        Console.WriteLine(string.Join(",", result));

        } catch (Exception e) {

            foreach (var t in tasks) {

                if (!t.IsFaulted) {

                    Console.WriteLine(t.Result);

                }

            }

            Console.WriteLine(e.ToString());

        }

    }

    private static async Task<string> DomeSomething(string name) {

        if (name=="") { throw new Exception("test"); }

        return name;

    }

}