Example. We can use the Directory class and a foreach-loop. We write our own custom method—we sum the length of each file, returning the total size in bytes.
Start The program calls Directory.GetFiles(). This gets all the files matching the "filter" at the directory in the path specified.
using System;
using System.IO;
class Program
{
static void Main()
{
var size = GetDirectorySize(@"programs\");
Console.WriteLine(size);
}
static long GetDirectorySize(string path)
{
// Get array of all file names.
string[] files = Directory.GetFiles(path, "*.*");
// Calculate total bytes of all files in a loop.
long totalBytes = 0;
foreach (string name in files)
{
// Use FileInfo to get length of each file.
FileInfo info = new FileInfo(name);
totalBytes += info.Length;
}
// Return total size
return totalBytes;
}
}382627
All directories. To get files in nested folders, use the SearchOption.AllDirectories argument. This returns an array with files from subdirectories.
Info You can modify the method to return only the sizes of files of a specific type (like PNG).
SearchOption.AllDirectories
"*.*""*.png"
Summary. We measured directory sizes in bytes. We can use a combination of Directory methods and FileInfo objects to sum the bytes.
Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.