Hello, Stoyo! I have the problem. Earlier I use NodeListView with ShapeNode objects and all were OK. But now I need to change ShapeNode objects on my own objects which are described as following:

BitmapImage bitmap = new BitmapImage(uri);
            Image img = new Image();
            img.Source = bitmap;
            img.Stretch = Stretch.Uniform; img.Width = 64; img.Height = 64;
            panel.Children.Add(img);
            TextBlock txtBlock = new TextBlock();
            txtBlock.Width = 80; txtBlock.TextWrapping = TextWrapping.Wrap;
            txtBlock.TextAlignment = TextAlignment.Center;
            txtBlock.Text = sLabel;
            panel.Children.Add(txtBlock);
            panel.Tag = a_nNodeType;
            m_ToolboxListView.Items.Add(panel);
 

And also I want to continue using NodeListView because it provides the Drag&Drop funcionality automatically. And I have the old code for drop event:

        private void OnDiagram_Drop(object sender, DragEventArgs e)
        {
            AnchorPattern ap = null;
            if (e.Data.GetDataPresent(typeof(DraggedNode)))
            {
                m_Diagram.AutoResize = AutoResize.RightAndDown;
#if false
                DiagramNode node = m_Diagram.Nodes[m_Diagram.Nodes.Count - 1];
                if (node is TPDENode)
                {
                    TPDENode shapeNode = node as TPDENode;
                    shapeNode.CustomDraw = CustomDraw.Additional2;
                    shapeNode.ShadowProps.ShadowDepth = 5;
                    Point dropPnt = e.GetPosition(m_Diagram); and etc.
 

And I want to reuse this code. But I need to get access to the StackPanel.Tag. How can I do this? Thank you!

Yes. It is very helpful advice. Thank you very much! But I have the next problem. I modify my code as following:

	  private void OnDiagram_Drop(object sender, DragEventArgs e)
	  {
		AnchorPattern ap = null;
		if (e.Data.GetDataPresent(typeof(DraggedNode)))
		{
		    m_Diagram.AutoResize = AutoResize.RightAndDown;
		    DiagramNode node = m_Diagram.Nodes[m_Diagram.Nodes.Count - 1];
		    if (node is DiagramNodeAdapter)
		    {
			  m_Diagram.Nodes.RemoveAt(m_Diagram.Nodes.Count - 1);
		    }
 

But I see my UIElement. It doesn't removed. But m_Diagram.Nodes.Count after RemoveAt is equals to 0. How to delete this UIElement? According to the node type I want to create the ShapeNode based object

I have tried to do it. But I see the opposite situation. First I go to the NodeCreated event and after that I go to the drop handler. I'll try to fix my code and parse the NodeAdapter in the NodeCreated...

I solve the problem. The code in the NodeCreated must be the following and all will works:

	 private void OnDiagram_NodeCreated(object sender, NodeEventArgs e)
	  {
		if (e.Node is DiagramNodeAdapter)
		{
		    DiagramNodeAdapter adapter = e.Node as DiagramNodeAdapter;
		    TPDENode tpdeNode = new TPDENode((NodeType)adapter.Tag);
		    m_Diagram.Nodes.Remove(e.Node);
		    m_Diagram.Nodes.Add(tpdeNode);
		}
	  }
 

Topic could be closed . Thank you