Help with C# code

using System;

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

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