dir file checker

fileCheckDir.cs

using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace fileChecker
{
    internal class Program
    {
        public static void Main(string[] args)
        {
            string path = @""; // example : @"Z:\"
                 
            //check dir size
            Task directorySizeCheck = Task.Factory.StartNew(() =>
            {
                DirectorySize(new DirectoryInfo(path + level), true);
            });
              
            //check file length
            Task fileLengthCheck = Task.Factory.StartNew(() =>
            {
                DirectoryFileLength(new DirectoryInfo(path + level), level);
            });
              
            //check dir length
            Task directoryLengthCheck = Task.Factory.StartNew(() =>
            {
                DirectoryLength(new DirectoryInfo(path + level), level);
            });
            
            //wait all checker work end 
            Task.WaitAll(new Task[3]{directorySizeCheck, fileLengthCheck, directoryLengthCheck});
        }

        public static double DirectorySize(DirectoryInfo dInfo, bool includeSubDir)   
        {   
           double totalSize = dInfo.EnumerateFiles().Sum(file => file.Length);
           if (includeSubDir) totalSize += dInfo.EnumerateDirectories().Sum(dir => DirectorySize(dir, true));   
           return totalSize;
        }

        public static void DirectoryLength(DirectoryInfo dInfo, string level)
        {    
            Console.WriteLine(level+ " level fileLength : " + dInfo.GetDirectories().Length);
        }

        public static void DirectoryFileLength(DirectoryInfo dInfo, string level)
        {    
            int fileLength = Directory.GetFiles(dInfo.FullName, "*.*", SearchOption.AllDirectories).Length;
            Console.WriteLine(level + " level fileLength : " + fileLength);
        }
    }
}