How to Reverse Letter on all Words in a Sentence in C#

namespace StringReverse
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Enter the string to reverse the word");
            var value = Console.ReadLine();
            Console.WriteLine("Reverse words is : ");
            if (value != null)
            {
                string[] strings = value.Split(' ');
                foreach(var item in strings)
                {
                    string reverseString = string.Empty;
                    for (int i = item.Count() - 1; i >= 0; i--)
                    {
                        reverseString += item[i];
                    }
                    Console.Write(reverseString + ' ');
                }
                Console.ReadLine();
            }
        }
    }
}