Could someone please help with the whole challenge ?

using System;

namespace Treehouse.CodeChallenges
{
    class Program
    {
        static void Main()
        {
            Console.Write("Enter the number of times to print \"Yay!\": ");

            int i = 0;   //counter for while loop
            int numTimes = 0;  //variable to hold user input

            String times = Console.ReadLine();  //get user input

            try
            {
                numTimes = int.Parse(times);  //see if it is an int
            }
            catch
            {
                Console.Write("You must enter a whole number.");  // write error message if not
            }
            if (numTimes < 0) //see if user input is positive
            {
                Console.Write("You must enter a positive number.");  // write error message if not
            }
            else 
            {
                while (i < numTimes)  //loop numTimes
                {
                    Console.Write("\"Yay\"! ");  
                    i += 1;  //increment loop counter
                }  
            }
        }
    }
}