Calculate Directory Size : Directory Size : File Directory Stream C# Examples

    
using  System;
using  System.IO;

static  class  MainClass
{
        static  void  Main(string[]  args)
        {
                DirectoryInfo  dir  =  new  DirectoryInfo("c:\\a");
                Console.WriteLine("Total  size:  "  +  CalculateDirectorySize(dir,  true).ToString()  +  "  bytes.");

        }

        static  long  CalculateDirectorySize(DirectoryInfo  directory,  bool  includeSubdirectories)
        {
                long  totalSize  =  0;

                //  Examine  all  contained  files.
                FileInfo[]  files  =  directory.GetFiles();
                foreach  (FileInfo  file  in  files)
                {
                        totalSize  +=  file.Length;
                }

                //  Examine  all  contained  directories.
                if  (includeSubdirectories)
                {
                        DirectoryInfo[]  dirs  =  directory.GetDirectories();
                        foreach  (DirectoryInfo  dir  in  dirs)
                        {
                                totalSize  +=  CalculateDirectorySize(dir,  true);
                        }
                }

                return  totalSize;
        }
}