FolderSize

Question

Hello,
Getting file size in bytes is as easy as:

(New System.IO.FileInfo(blahfile).Length)

But why can't find an easy short solution to get folder size in vb.net?
What's the best approach?

• is this fine?

       Dim PathInfo As DirectoryInfo = New DirectoryInfo(MyDialog.SelectedPath)  
       Dim FileInfo() As FileInfo = PathInfo.GetFiles("*.*", SearchOption.AllDirectories)  
       Dim TotalFolderSize As Long = 0  
       For MyLoop As Integer = 0 To FileInfo.Length - 1  
           TotalFolderSize += New System.IO.FileInfo(FileInfo(MyLoop).FullName).Length  
       Next  
  

if so: GetFiles(" * . * " ...

. will include multi extension files? or if use a single asterisk like " * " will also include all files?

Answer 1

Hi
I played around with this code a fair while ago. Very fast but, not good where there are special system file types/folder types included.

Public Class Form1  
  Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load  
    Dim fso = CreateObject("Scripting.FileSystemObject")  
    Dim pr = fso.GetFolder("C:\Users\lesha\AppData\Local\Temp")  
    Dim sz As Double = pr.Size / 1024 / 1024  
    MessageBox.Show(sz.ToString("0.00 MB"))  
  End Sub  
End Class  

Answer 2

You can see this thread where the OP tested (nearly) all methods : Fastest way to get size of a directory including all files and sub folders
(reading MFT is the fastest method)