Return folder path from selected node in a treeview

[hood8jmark]

Hi All,

This may be a very simple solution but as I am so new to VB.NET as opposed to VB6, I'm gonna need some help. How can I capture the the folder path of a selected node in a treeview? I have a treeview set up to be populated with with folders based on my systems directory structure. I need to be able to select the target folder (not when expand the node but when I select it) and return the folder path. I'm using the code below to accomplish this. Any help would be greatly appreciated. Thanks.

Imports System.IO
Imports System.Runtime.InteropServices

Public Class Archiver
    Private Structure SHFILEINFO
        Public hIcon As IntPtr            ' : icon
        Public iIcon As Integer           ' : icondex
        Public dwAttributes As Integer    ' : SFGAO_ flags
         _
        Public szDisplayName As String
         _
        Public szTypeName As String
    End Structure

    Private Declare Auto Function SHGetFileInfo Lib "shell32.dll" _
            (ByVal pszPath As String, _
             ByVal dwFileAttributes As Integer, _
             ByRef psfi As SHFILEINFO, _
             ByVal cbFileInfo As Integer, _
             ByVal uFlags As Integer) As IntPtr

    Private Const SHGFI_ICON = &H100
    Private Const SHGFI_SMALLICON = &H1
    Private Const SHGFI_LARGEICON = &H0    ' Large icon
    Private Const MAX_PATH = 260
    Private Sub AddImages(ByVal strFileName As String)

        Dim shInfo As SHFILEINFO
        shInfo = New SHFILEINFO()
        shInfo.szDisplayName = New String(vbNullChar, MAX_PATH)
        shInfo.szTypeName = New String(vbNullChar, 80)
        Dim hIcon As IntPtr
        hIcon = SHGetFileInfo(strFileName, 0, shInfo, Marshal.SizeOf(shInfo), SHGFI_ICON Or SHGFI_SMALLICON)
        Dim MyIcon As Drawing.Bitmap
        MyIcon = Drawing.Icon.FromHandle(shInfo.hIcon).ToBitmap
        ImageList1.Images.Add(strFileName.ToString(), MyIcon)

    End Sub
    Private Sub AddAllFolders(ByVal TNode As TreeNode, ByVal FolderPath As String)
        Try
            For Each FolderNode As String In Directory.GetDirectories(FolderPath)
                Dim SubFolderNode As TreeNode = TNode.Nodes.Add(FolderNode.Substring(FolderNode.LastIndexOf("\"c) + 1))

                SubFolderNode.Tag = FolderNode

                SubFolderNode.Nodes.Add("Loading...")
            Next
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub
    Private Sub Archiver_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim Tnode As TreeNode = TreeView1.Nodes.Add("(Drive S:)")
        AddAllFolders(Tnode, "S:\")

        ListView1.View = View.Details
        ' Add a column with width 80 and left alignment
        ListView1.Columns.Add("File Name", 150, HorizontalAlignment.Left)
        ListView1.Columns.Add("File Type", 80, HorizontalAlignment.Left)
        ListView1.Columns.Add("Date Modified", 150, HorizontalAlignment.Left)
    End Sub


    Private Sub TreeView1_AfterSelect(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewEventArgs) Handles TreeView1.AfterSelect

        Dim FileExtension As String
        Dim SubItemIndex As Integer
        Dim DateMod As String
        ListView1.Items.Clear()
        If TreeView1.SelectedNode.Nodes.Count = 1 AndAlso TreeView1.SelectedNode.Nodes(0).Text = "Loading..." Then

            TreeView1.SelectedNode.Nodes.Clear()

            AddAllFolders(TreeView1.SelectedNode, CStr(TreeView1.SelectedNode.Tag))

        End If
        Dim folder As String = CStr(TreeView1.SelectedNode.Tag)

        If Not folder Is Nothing AndAlso IO.Directory.Exists(folder) Then
            Try
                For Each file As String In IO.Directory.GetFiles(folder)
                    FileExtension = IO.Path.GetExtension(file)
                    DateMod = IO.File.GetLastWriteTime(file).ToString()
                    AddImages(file)
                    ListView1.Items.Add(file.Substring(file.LastIndexOf("\"c) + 1), file.ToString())
                    ListView1.Items(SubItemIndex).SubItems.Add(FileExtension.ToString() & " File")
                    ListView1.Items(SubItemIndex).SubItems.Add(DateMod.ToString())
                    SubItemIndex += 1
                Next
            Catch ex As Exception
                MsgBox(ex.Message)
            End Try
        End If
    End Sub
    
    Private Sub TreeView1_BeforeExpand(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeViewCancelEventArgs) Handles TreeView1.BeforeExpand
        If e.Node.Nodes.Count = 1 AndAlso e.Node.Nodes(0).Text = "Loading..." Then

            e.Node.Nodes.Clear()
            AddAllFolders(e.Node, CStr(e.Node.Tag))

        End If

    End Sub

    Private Sub ListView1_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles ListView1.DoubleClick

    End Sub

    Private Sub ListView1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged

    End Sub

    Private Sub TreeView1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles TreeView1.Click
        
    End Sub

    Private Sub TreeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
        'Dim fldr As String
        'fldr = TreeView1.SelectedNode.FullPath
        'MsgBox(fldr)
    End Sub

    
End Class

 

[aous77]

Try having this line

Dim myFolders As String() = Directory.GetDirectories(e.Node.Text)

on the AfterSelect part

myFolders(0) should hold the Folder's Full Path
if you have the folders full path in the text part of the node then e.Node.Text should do it

let me know if that is what you are looking for

 

[hood8jmark]

Thanks aous77 that did it.