Progrm for Check a Character is a Vowel or Not in C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
    class CalcAvgPerc
    {
        static void Main(string[] args)
        {
            char ch;
            Console.WriteLine("Enter the Charachter to check if its a vowel..");
            ch = char.Parse(Console.ReadLine());
            Console.WriteLine("Checking Charachter.....");
            System.Threading.Thread.Sleep(2000);
            if (ch == 'a' || ch == 'A' || ch == 'e' || ch == 'E' || ch == 'i' || ch == 'I' || ch == 'o' || ch == 'O' || ch == 'u' || ch == 'U')
            {
                Console.WriteLine("Charachter entered is Vowel : {0}", ch);
            }
            else
            {
                Console.WriteLine("Charachter is not a vowel:{0}", ch);
            }
            Console.ReadKey();
        }
    }
}