counting occurrence of letters in C# program

counting occurrence of letters in C# program
class solution_main
        static void Main(string[] args)
            string inPutString = "CodeProject Quick Answers";
            char letterToBeChecked = 'e';
            var result = GetLetterOccurence(inPutString, letterToBeChecked);
            Console.WriteLine(" The occurence of letter '{0}' from the string {1} is {2}", 
            Console.WriteLine("\nPress any key to exit");
        /// <summary>
        /// Get the number of occurence of letter
        /// </summary>
        /// <param name="inPutString">InputString value</param>
        /// <param name="letterToBeChecked">LetterToBeChecked value</param>
        /// <returns></returns>
        private static int GetLetterOccurence(string inPutString, char letterToBeChecked)
            char[] chars = inPutString.ToArray();  // Get the Characters(letters) from string

            var result = (from c in chars
                          where c.Equals(letterToBeChecked)
                          select c).Count();
            return result;
By Drupal Study