ASP.NET：獲取檔案大小和所有檔案數量的快速方法？

對以下代碼進行了哪些修改，來自：

https://www.devcurry.com/2010/07/calculate-size-of-folderdirectory-using.html

是否還需要回傳檔案夾和子檔案夾中所有檔案的計數？

是否可以同時進行以節省時間？

C＃

using System;
using System.Linq;
using System.IO;

namespace ConsoleApplication3
{
  class Program
  {
    static void Main(string[] args)
    {
      DirectoryInfo dInfo = new DirectoryInfo(@"C:/Articles");
      // set bool parameter to false if you
      // do not want to include subdirectories.
      long sizeOfDir = DirectorySize(dInfo, true);

      Console.WriteLine("Directory size in Bytes : "  
      "{0:N0} Bytes", sizeOfDir);
      Console.WriteLine("Directory size in KB : "  
      "{0:N2} KB", ((double)sizeOfDir) / 1024);
      Console.WriteLine("Directory size in MB : "   
      "{0:N2} MB", ((double)sizeOfDir) / (1024 * 1024));

      Console.ReadLine();
    }

    static long DirectorySize(DirectoryInfo dInfo, bool includeSubDir)
    {
       // Enumerate all the files
       long totalSize = dInfo.EnumerateFiles()
                    .Sum(file => file.Length);

       // If Subdirectories are to be included
       if (includeSubDir)
       {
          // Enumerate all sub-directories
          totalSize  = dInfo.EnumerateDirectories()
                   .Sum(dir => DirectorySize(dir, true));
       }
       return totalSize;
    }
  }
}

VB

Imports System
Imports System.Linq
Imports System.IO

Module Module1

Sub Main()
   Dim dInfo As New DirectoryInfo("C:/Articles")
   ' set bool parameter to false if you
   ' do not want to include subdirectories.
   Dim sizeOfDir As Long = DirectorySize(dInfo, True)

   Console.WriteLine("Directory size in Bytes : " & _
    "{0:N0} Bytes", sizeOfDir)
   Console.WriteLine("Directory size in KB : " & _
    "{0:N2} KB", (CDbl(sizeOfDir)) / 1024)
   Console.WriteLine("Directory size in MB : " & _
    "{0:N2} MB", (CDbl(sizeOfDir)) / (1024 * 1024))

   Console.ReadLine()
End Sub

Private Function DirectorySize(ByVal dInfo As DirectoryInfo, _
   ByVal includeSubDir As Boolean) As Long
   ' Enumerate all the files
   Dim totalSize As Long = dInfo.EnumerateFiles() _
     .Sum(Function(file) file.Length)

   ' If Subdirectories are to be included
   If includeSubDir Then
     ' Enumerate all sub-directories
     totalSize  = dInfo.EnumerateDirectories() _
      .Sum(Function(dir) DirectorySize(dir, True))
   End If
   Return totalSize
End Function

End Module

我還假設它可以在一個執行緒中執行，并將結果存盤在資料庫中，以防它需要很長時間。

更新 1：

從檔案夾中的檔案計數中，我看到了一個答案（盡管不是被接受的）來獲取檔案計數使用 LINQ，如上面的代碼：

var fileCount = (from file in Directory.EnumerateFiles(@"H:\iPod_Control\Music", "*.mp3", SearchOption.AllDirectories)
                        select file).Count();

I haven't a huge amount of experience with LINQ and so was wondering if the code should or could be combined so the LINQ returns two values (size and count) to save time? I could have a separate thread for each task but thought it could be more efficient if there only needed to be one pass per folder.

We would want it to be able to handle millions of sub folders with a .png and a .jpg file in each.

Our folders look like:

 /images/3/4/2/4/7/6/5/4/3/4/3/2/abc-234345674243.png

uj5u.com熱心網友回復：

嘗試轉儲遞回，并嘗試轉儲 linq - 它很慢并且會占用大量記憶體。

嘗試這個：

  Dim strFolder = "C:\Users\AlbertKallal\Desktop"

    Dim MyDir As New DirectoryInfo(strFolder)
    Dim MyFiles() As FileInfo = MyDir.GetFiles("*.*", SearchOption.AllDirectories)



    For Each MyFile As FileInfo In MyFiles
        tSize  = MyFile.Length
    Next

標籤：c# asp.net vb.net

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