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Shows file count per extension or a progress bar for large folders?

ICSM Computer 497 13 May 2025

Ask by ICSM Computer

Updated 13 May 2025

1 Answers

ICSM Computer 13 May 2025

Here’s a version of the directory size calculator that also:

Shows file count per extension
Tracks total size
Optionally displays progress (simple output)

Full Example

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

class Program
{
    static void Main()
    {
        string folderPath = @"C:\MyFolder";

        if (!Directory.Exists(folderPath))
        {
            Console.WriteLine("Folder not found.");
            return;
        }

        long totalSize = 0;
        var extensionCounts = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);

        Console.WriteLine("Processing files...");

        var files = Directory.EnumerateFiles(folderPath, "*", SearchOption.AllDirectories);
        int fileIndex = 0;

        foreach (var file in files)
        {
            try
            {
                var fi = new FileInfo(file);
                totalSize += fi.Length;

                string ext = fi.Extension;
                if (string.IsNullOrEmpty(ext)) ext = "[no extension]";

                if (!extensionCounts.ContainsKey(ext))
                    extensionCounts[ext] = 0;

                extensionCounts[ext]++;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"[Skipped] {file}: {ex.Message}");
            }

            if (++fileIndex % 100 == 0)
            {
                Console.WriteLine($"Processed {fileIndex} files...");
            }
        }

        Console.WriteLine($"\nTotal size: {totalSize / 1024.0 / 1024.0:F2} MB");
        Console.WriteLine("File counts by extension:");
        foreach (var kvp in extensionCounts.OrderByDescending(k => k.Value))
        {
            Console.WriteLine($"  {kvp.Key}: {kvp.Value}");
        }
    }
}

Sample Output:

Processing files...
Processed 100 files...
Processed 200 files...

Total size: 153.42 MB
File counts by extension:
  .txt: 92
  .log: 65
  .json: 31
  [no extension]: 5

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