Treeview set node tooltip

Posted by: kbj on 5 March 2023, 1:48 am EST

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    Posted 5 March 2023, 1:48 am EST

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  • Posted 5 March 2023, 1:48 am EST

    Since there is a ApplyNodeCellToolTipText event and a C1TreeViewToolTipTextEventArgs I am guessing that there is a simple way to set a tooltip for an individual C1Treenode, but I can’t find it in any documentation.

    So, how is that done?


    I currently use the following code:

      Private Sub C1TreeView1_MouseHover(sender As Object, e As EventArgs) Handles C1TreeView1.MouseHover
            Dim ptv = C1TreeView1.PointToScreen(Point.Empty)
            Dim p = Cursor.Position
            p.Offset(-ptv.X, -ptv.Y)
        End Sub
        Private Sub setHoverNode(node As C1TreeNode)
            If Not Equals(node, hoverNode) Then
                hoverNode = node
                If IsNothing(hoverNode) Then
                    sttInfo.SetToolTip(C1TreeView1, "")
                    sttInfo.SetToolTip(C1TreeView1, "Node:" + hoverNode.GetValue)
                End If
            End If
        End Sub
        Private Sub C1TreeView1_MouseMove(sender As Object, e As MouseEventArgs) Handles C1TreeView1.MouseMove
            Dim p = New Point(e.X, e.Y)
            Dim node = C1TreeView1.GetNodeAtPoint(p)
        End Sub
        Private hoverNode As C1TreeNode = Nothing
  • Posted 5 March 2023, 6:38 pm EST

    Hi Kingman,

    To set a tooltip for a C1Treenode or even an individual cell of a C1TreeNode, you can directly use the ApplyNodeCellToolTipText event of the C1TreeView. In the event handler, you can use the “e.Node” property to determine the hovered node and then use the “e.TooltipText” property to set the required Tooltip text. Please see the attached sample for reference.


    Best Regards,


  • Posted 5 March 2023, 11:48 pm EST

    Hi Kartic,

    Thanks for your quick response and solution. I was missing that you had to turn ShowToolTips on to activate the ApplyNodeCellToolTipText event when required.

    It works perfectly! The c1treeview has certainly matured into a great control.


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