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Get TreeView node's name during drag and drop

Posted on 2012-04-02
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Last Modified: 2012-04-02
Hi. I have managed to work out how to get the node's index during drag and drop but how do I change the following code to get the node's name

    Private Sub TreeView_From_ItemDrag(sender As Object, e As System.Windows.Forms.ItemDragEventArgs) Handles TreeView_From.ItemDrag
        'Set the drag node and initiate the DragDrop
        DoDragDrop(e.Item, DragDropEffects.Copy)
        MsgBox(e.Item(e.Item.Index).name)

    End Sub
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Question by:murbro
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LVL 83

Expert Comment

by:CodeCruiser
ID: 37795039
Have you tried

MsgBox(e.Item.name)

?
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Author Comment

by:murbro
ID: 37795526
Hi. That returns the word "Column" for every node. The nodes are loaded with SQL table columns. Not sure if this has something to do with it
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LVL 83

Expert Comment

by:CodeCruiser
ID: 37795554
Show the code you use to populate the nodes.
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Author Comment

by:murbro
ID: 37795612
Public Sub Populate_TreeView_From_SQL()

        Dim SQLExpression As String = _
            "SELECT TABLE_NAME, COLUMN_NAME FROM information_schema.columns ORDER BY TABLE_NAME,COLUMN_NAME"



        Dim Rootnode As TreeNode = Nothing
        Dim Mainnode As TreeNode = Nothing
        Dim Childnode As TreeNode = Nothing

        Dim MainName As String = String.Empty

        Dim oConnectionString As String = Me.RichTextBox1.Text
        Dim cn As New SqlConnection(oConnectionString)

        Dim adp As New SqlDataAdapter(SQLExpression, cn)

        Dim ds As New DataSet

        adp.Fill(ds, "SystemData")

        Me.TreeView_From.Nodes.Clear()

        Rootnode = Me.TreeView_From.Nodes.Add(key:="Root", text:="database name here", _
                                        imageIndex:=0, selectedImageIndex:=0)



        For Each row As DataRow In ds.Tables("SystemData").Rows

            If MainName <> row(0).ToString Then
                Mainnode = Rootnode.Nodes.Add(key:="Table", text:=row(0).ToString, _
                imageIndex:=1, selectedImageIndex:=1)
                MainName = row(0).ToString
            End If

            Childnode = Mainnode.Nodes.Add(key:="Column", text:=row(1).ToString, _
            imageIndex:=2, selectedImageIndex:=2)

        Next

        Me.TreeView_From.Nodes(0).EnsureVisible()
        Me.TreeView_From.ExpandAll()
        Me.TreeView_From.Scrollable = True

        ds.Dispose()
        ds = Nothing
        adp.Dispose()
        adp = Nothing
        cn.Dispose()
        cn = Nothing

    End Sub
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LVL 83

Accepted Solution

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CodeCruiser earned 500 total points
ID: 37795719
>Childnode = Mainnode.Nodes.Add(key:="Column"

It appears that key is being used for name.

Try changing it to

Childnode = Mainnode.Nodes.Add(row(1).ToString)
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Author Closing Comment

by:murbro
ID: 37796784
Thanks very much
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