using System;
using System.IO;
class MainClass {
static void Main(string[] args) {
DirectoryInfo dir = new DirectoryInfo("c:\\");
Console.WriteLine("Total size: " + CalculateDirectorySize(dir, true).ToString() + " bytes.");
}
static long CalculateDirectorySize(DirectoryInfo directory, bool includeSubdirectories) {
long totalSize = 0;
FileInfo[] files = directory.GetFiles();
foreach (FileInfo file in files) {
totalSize += file.Length;
}
if (includeSubdirectories) {
DirectoryInfo[] dirs = directory.GetDirectories();
foreach (DirectoryInfo dir in dirs) {
totalSize += CalculateDirectorySize(dir, true);
}
}
return totalSize;
}
}