[Solved] Task 1 is no longer passing C#

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            while (true) 
            {
                string yay = "Yay!";
                int number = 0;
                Console.WriteLine("Enter the number of times to print \"Yay!\": ");
                string userPrint = Console.ReadLine();
                try
                {
                    number = int.Parse(userPrint);
                    if (number <= -1)
                    {
                        Console.WriteLine("You must enter a positive number.");
                    }
                    while (number > 0)
                    {
                        Console.WriteLine(yay);
                        number--;
                    }
                }

                catch (FormatException)
                {

                    Console.WriteLine("You must enter a whole number.");
                }


            }
        }
    }
}