How to determine if a folder is normal

Question

Hello,
I am populating a Treeview with drives and folders. When I add nodes with folders for a given drive, I do not want any system folders, hidden folders, etc.
It is my understanding that the "Normal" attribute is assigned to folders that have no special attributes. When I run the following code (it's test code), I always get false.
    Private Sub TreeView1_NodeMouseClick(sender As Object, e As TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
        Dim att As FileAttributes
        Dim finfo As DirectoryInfo
        Dim s As String
        finfo = New DirectoryInfo(e.Node.Tag)
        att = finfo.Attributes
        s = "False"
        If att = FileAttributes.Normal Then
            s = "True"
        End If
        TextBox1.Text = e.Node.Tag + " " + s
    End Sub
How can I just get folders with no special attributes?
Thanks

Answer 1

A directory can have other good special attributes, such as “Compressed”, “NotContentIndexed”, etc. It also always has the “Directory” attribute.
If you want to exclude hidden, read-only and system files, then try this:
Dim is_normal As Boolean = (finfo.Attributes And (FileAttributes.Hidden Or FileAttribute.ReadOnly Or FileAttribute.System)) = 0
s = If(is_normal, "False", "True")
Since Attributes is a combination of values (flags), you cannot use just an '=' to check an attribute.