Extract File c#

using System;

namespace String_Explosions
{
    class Program
    {
        static void Main(string[] args)
        {
              string[] input = Console.ReadLine().Split("\\\\");
              string file = input[input.Length - 1];

            string fileName = file.Substring(0, file.LastIndexOf("."));
            string fileExtension = file.Substring(file.LastIndexOf('.') + 1);
            Console.WriteLine($"File name: {fileName} \nFile extension: {fileExtension}");


        }



    }
}