Improve company productivity with a Business Account.Sign Up

x
?
Solved

root node of the source treeView

Posted on 2009-05-11
7
Medium Priority
?
254 Views
Last Modified: 2012-05-06
I am doing dragdrop operation from one tree to other for getting source node i am using
newNode = DirectCast(e.Data.GetData("System.Windows.Forms.TreeNode"), TreeNode)
but its only giving me node text and name

I also want to get root node of the source tree. how i can do this

Thanks
0
Comment
Question by:farjack1
  • 3
  • 3
7 Comments
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 24359659
To get the root node you could do something like:

        Dim rootNode As TreeNode = newNode
        While Not IsNothing(rootNode.Parent)
            rootNode = rootNode.Parent
        End While

0
 

Author Comment

by:farjack1
ID: 24359764
rootNode.Parent

this returning Nothing
0
 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 24359774
One moment please...
0
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

 
LVL 86

Expert Comment

by:Mike Tomlinson
ID: 24359877
It's working fine for me...I setup two TreeViews (TreeView1, TreeView2) on a Form and added some Nodes to TreeView1.

Here is some of my Debug output:

    Dropped Node: Node7
    Root Node: Node2
    FullPath: Node2\Node7

    Dropped Node: Node14
    Root Node: Node1
    FullPath: Node1\Node6\Node14

And here is the code:
Public Class Form1
 
    Private Sub TreeView1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TreeView1.MouseMove
        If e.Button = Windows.Forms.MouseButtons.Left Then
            Dim SourceNode As TreeNode = TreeView1.GetNodeAt(TreeView1.PointToClient(Cursor.Position))
            If Not IsNothing(SourceNode) Then
                TreeView1.DoDragDrop(SourceNode, DragDropEffects.All)
            End If
        End If
    End Sub
 
    Private Sub TreeView2_DragOver(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TreeView2.DragOver
        e.Effect = If(e.Data.GetDataPresent("System.Windows.Forms.TreeNode"), DragDropEffects.All, DragDropEffects.None)
    End Sub
 
    Private Sub TreeView2_DragDrop(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles TreeView2.DragDrop
        Dim DroppedNode As TreeNode = e.Data.GetData("System.Windows.Forms.TreeNode")
        Debug.Print("Dropped Node: " & DroppedNode.Text)
 
        Dim RootNode As TreeNode = DroppedNode
        While Not IsNothing(rootNode.Parent)
            rootNode = rootNode.Parent
        End While
        If Not (rootNode Is DroppedNode) Then
            Debug.Print("Root Node: " & rootNode.Text)
        End If
 
        Debug.Print("FullPath: " & DroppedNode.FullPath)
    End Sub
 
End Class

Open in new window

0
 

Expert Comment

by:praveenkumar_3i
ID: 24362164
Try to get Parent node of a xml documnet.

Code Sample:

                            XmlDocument xmldoc = new XmlDocument();
                            xmldoc.Load(strXMLFile);
                            XmlNode xmlRootNode = xmldoc.ParentNode;

0
 

Expert Comment

by:praveenkumar_3i
ID: 24362184
In Treeview

TreeNodeCollection nodes = tvwFolders.Nodes;
if (nodes.Count > 0)
{
// Select the root node
tvwFolders.SelectedNode = nodes[0];
}


0
 

Accepted Solution

by:
praveenkumar_3i earned 1500 total points
ID: 24362191
0

Featured Post

Keep up with what's happening at Experts Exchange!

Sign up to receive Decoded, a new monthly digest with product updates, feature release info, continuing education opportunities, and more.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Microsoft Reports are based on a report definition, which is an XML file that describes data and layout for the report, with a different extension. You can create a client-side report definition language (*.rdlc) file with Visual Studio, and build g…
An ASP.NET Web Form User Control is not newly introduced in ASP.NET. In fact, it was an old technology yet still playing a role to generate web content, especially when we want to use it to have a better and easy way to control part of the web conte…
In the video, one can understand the process of resizing images in single or bulk. Kernel Bulk Image Resizer is an easy to use tool for resizing large number of images. One can add and resize multiple images with this tool in single go. The video sh…
If you are looking for an automated tool which can generate reports for Outlook emails and other items from PST file, then you can go for Kernel PST Reporter tool. The reports which are created by this tool are helpful to analyze and understand PST …

595 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question