Access in a folder is denied

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1.00/5 (1 vote)

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I'm looking for a file in my computer.
Using this way

For Each foundFile As String In My.Computer.FileSystem.GetFiles(
	My.Computer.FileSystem.SpecialDirectories.MyDocuments,
        Microsoft.VisualBasic.FileIO.SearchOption.SearchAllSubDirectories, 
        UploadControl.FileName)
	fullPath.Add(foundFile)
    Next

But in some subdirectories access does not allow throwing error `access is denied`

I do not want to manage the error but go to the next subdirectory.

How can I do this ?

What I have tried:

Be very careful here
What I want is: When the problem occurs the code has to leave it and got to another directory.

Posted 27-Jan-19 6:41am

Lefteris Gkinis

Updated 27-Jan-19 6:56am

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Dave Kreskowiak · Accepted Answer · 2019-01-27T06:46:00

You have to enumerate the directories and files yourself. You're not going to be able to use the My.Computer shortcut for this.

See Directory.GetDirectories[^] and Directory.GetFiles[^].

You're going to have two loops, an outer directory loop and an inner files loops. Wrap the inner files loop in a try/catch block and you'll be able to catch the exception and still continue with the next directory.

OriginalGriff · Accepted Answer · 2019-01-27T06:57:00

To add to what Dave says, there are folders in your documents that the system maintains: mostly concerned with the recycle bin.
If you check for them, you can reduce the number of exceptions, which will save time (significant time if your documents folder has a lot of subdirectories).
This may help:

C#

private long SizeDirFolders(string dir, DirNode node)
    {
    if (!IsIgnorable(dir))
        {
        if (dir.EndsWith(":")) dir += "\\";
        foreach (string path in Directory.GetDirectories(dir))
            {
            try
                {
                int last = path.LastIndexOf('\\');
                if (last < 0)
                    {
                    last = 0;
                    }
                string sname = path.Substring(last);
                if (!IsIgnorable(sname))
                    {
                    DirNode dn = new DirNode(sname, 0);
                    lock (Root)
                        {
                        node.Add(dn);
                        }
                    SizeDir(path, dn);
                    }
                }
            catch (UnauthorizedAccessException) { } //Discard
            catch (Exception ex)
                {
                DialogResult result =  MessageBox.Show("An error occurred: " + ex.Message + "\nResults for the " + dir + "will not be complete", "Error!", MessageBoxButtons.OKCancel);
                if (result == DialogResult.Cancel) return node.Size;
                }
            }
        }
    return node.Size;
    }

private bool IsIgnorable(string dir)
    {
    if (dir.EndsWith(":System Volume Information")) return true;
    if (dir.Contains(":$RECYCLE.BIN")) return true;
    return false;
    }

private void SizeDir(string dir, DirNode node)
    {
    if (!IsIgnorable(dir))
        {
        DirNode dn = SizeDirFiles(dir);
        lock (Root)
            {
            node.Add(dn);
            }
        SizeDirFolders(dir, node);
        }
    }

Access in a folder is denied

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