How to check total # of files and folders

[programmerboy]

As the subject says how can I check total # of files and folders in a particular folder and determine the total size of that folder. I will be using VB.NET. A small code snippet will be great.
Thanks

[Curtis Rutland]

No code snippet, but an explanation:

To do this right, you need to use the System.IO namespace, so for VB.NET, you need to put Imports System.IO at the very top of the page.

The two objects that will be most useful to you are DirectoryInfo and FileInfo. DirectoryInfo can get all files and all directories in a particular directory. However, this will only get the top level. If you want to get all the files in all the subdirectories, you will need to write a recursive function. You should look up recursion if you aren't familiar with it. Recursion is a tricky but very important concept to learn.

Let me know if you need any more help.

[programmerboy]

No code snippet, but an explanation:

To do this right, you need to use the System.IO namespace, so for VB.NET, you need to put Imports System.IO at the very top of the page.

The two objects that will be most useful to you are DirectoryInfo and FileInfo. DirectoryInfo can get all files and all directories in a particular directory. However, this will only get the top level. If you want to get all the files in all the subdirectories, you will need to write a recursive function. You should look up recursion if you aren't familiar with it. Recursion is a tricky but very important concept to learn.

Let me know if you need any more help.

Thanks for the help. Actually I used to be a developer one year ago, now I am in infrastructure, so I am kinda forgetting the stuff. I know how to use recursive loop, I will use that. All I need to know how to get the size of the root folder.

[Curtis Rutland]

Thanks for the help. Actually I used to be a developer one year ago, now I am in infrastructure, so I am kinda forgetting the stuff. I know how to use recursive loop, I will use that. All I need to know how to get the size of the root folder.

Well, that's the thing. You can't get the root folder size without recursively looping through all the subdirs, getting all the files and adding up their sizes.

Hope that helps.

[programmerboy]

Well, that's the thing. You can't get the root folder size without recursively looping through all the subdirs, getting all the files and adding up their sizes.

Hope that helps.

I have this recursive function to check the total files and folders. It is working fine on small folders, however on large folders program hung and Visual studio generated an exception. How can I make it run faster. Also, how come Windows return files, folders and size so quickly?

Private Sub SubDirectory(ByVal path As String, ByRef txtBox As TextBox)
        Dim folder As String
 
        If Directory.Exists(path) Then
 
            For Each folder In Directory.GetDirectories(path)
                totalFolders += 1
                txtBox.Text &= folder & vbCrLf
                SubDirectory(folder, txtBox)
            Next
        End If
 
    End Sub

[Curtis Rutland]

What is the exception that is thrown? Stack Overflow? Out of Memory? I'm not sure how to streamline this, maybe someone else will know.

[programmerboy]

What is the exception that is thrown? Stack Overflow? Out of Memory? I'm not sure how to streamline this, maybe someone else will know.

Something like this.

The CLR has been unable to transition from COM context 0x1b0328 to COM context 0x1b0498 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.


Also, I have zip files in the folder. Does it affect the performance. I am using the following code to get file size.

For Each fl In Directory.GetFiles(path, "*.*", SearchOption.AllDirectories)
                    totalFiles += 1
                    fInfo = New FileInfo(fl)
                    fileSize += fInfo.Length()
Next

[Curtis Rutland]

It would appear that I have mislead you...I was wrong. Using that Code you posted should get all files in all subdirectories. The SearchOption.AllDirectories should take care of that. So using that, you shoudl just be able to use that on the root dir, and skip the recursive call. Sorry to send you spinning your wheels.

[TRScheel]

The following code should work to your purposes. Very dumbed down and you will have to expand on it for your needs. The code should be fairly self explanatory but if you need me to elaborate I will.

string folderPath = "";
DirectoryInfo di = new DirectoryInfo(folderPath));
int totalFiles = 0;
int totalFolders = 0;
double totalSizeMB = 0;
 
totalFolders = di.GetDirectories("*", SearchOption.AllDirectories).Count();
foreach (var innerDI in di.GetDirectories("*", SearchOption.AllDirectories))
{
 
    totalFiles += innerDI.GetFiles("*", SearchOption.AllDirectories).Count();
    foreach (var file in innerDI.GetFiles("*", SearchOption.AllDirectories))
    {
        totalSizeMB += file.Length / 1024.0 / 1024.0;
    }
}
 
MessageBox.Show(string.Format("# of Files: {0}\n# of Folders: {1}\nSize in MB: {2}", totalFiles, totalFolders, totalSizeMB));
 

[programmerboy]

The following code should work to your purposes. Very dumbed down and you will have to expand on it for your needs. The code should be fairly self explanatory but if you need me to elaborate I will.

string folderPath = "";
DirectoryInfo di = new DirectoryInfo(folderPath));
int totalFiles = 0;
int totalFolders = 0;
double totalSizeMB = 0;
 
totalFolders = di.GetDirectories("*", SearchOption.AllDirectories).Count();
foreach (var innerDI in di.GetDirectories("*", SearchOption.AllDirectories))
{
 
    totalFiles += innerDI.GetFiles("*", SearchOption.AllDirectories).Count();
    foreach (var file in innerDI.GetFiles("*", SearchOption.AllDirectories))
    {
        totalSizeMB += file.Length / 1024.0 / 1024.0;
    }
}
 
MessageBox.Show(string.Format("# of Files: {0}\n# of Folders: {1}\nSize in MB: {2}", totalFiles, totalFolders, totalSizeMB));
 

Thanks man. I will convert this C# code to VB.net. Hopefully it works better than my code snippet.

[mh22gw]

I found this page and this is just what I was looking for. I have some problems when I use this code. I just copy and paste it on my page.

When I add my path like this
string folderPath = Server.MapPath("userFiles/mh22gw");

It will not work, it only shows number of subfolders. When I add my path like this:
string folderPath = Server.MapPath("userFiles");

Then it works fine.

I have tried to use Server.MapPath but it will ot work then either. Can you help me? I would like to have it work in this way
string folderPath = Server.MapPath("userFiles/" + User.Identity.Name);