[RESOLVED] Add nodes treeview drag-drop textfile

[Radjesh Klauke]

Hi,

I have a simple textfile which I want to drag-drop into the treeview. After the drop read the textfile (line by line) and create the nodes. There are no subnodes (what-so-ever). File looks like this:

line1
line2
line3
line4

Any suggestions/examples?

[enrico1982]

Combination of these two should cover it:

Drag and drop with treeview: http://www.codeproject.com/Articles/...nd-Drop-VB-NET

Read and write with text files: http://www.techrepublic.com/article/...ic-net/1045309

[Radjesh Klauke]

If it were that simple I wouldn't ask. Besides that, I probably need to Peek(). How to add the nodes according the textfile?

[.paul.]

try this:

Public Class Form1
 
    Private Sub TreeView1_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TreeView1.DragDrop
        If e.Data.GetDataPresent(DataFormats.FileDrop) Then
            Dim file As String = DirectCast(e.Data.GetData(DataFormats.FileDrop), String()).First
            Dim lines() As String = IO.File.ReadAllLines(file)
 
            For Each line As String In lines
                TreeView1.Nodes.Add(line, line)
            Next
 
        End If
    End Sub
 
    Private Sub TreeView1_DragOver(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TreeView1.DragOver
        If e.Data.GetDataPresent(DataFormats.FileDrop) Then
            e.Effect = DragDropEffects.All
        End If
    End Sub
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        TreeView1.AllowDrop = True
    End Sub
 
End Class

[Radjesh Klauke]

Thanks Paul. +REP deserved, but I can't give you at the moment unfortunately.

[.paul.]

no problem.