Hi,

I defined DiagramListViewVisualItem item and dragged it to the radDiagram. 

My question is how to find the items by ID? 

When I found the IDs, I would connect two items programmatically. <Source and target are known>.

I used this code

 MessageBox.Show(radDiagram1.Shapes[0].Name.ToString());

but nothing ...

But when I used this code

MessageBox.Show(radDiagram1.Shapes[0].Width.ToString());

the width was shown!

I need to find the items individually. 

Thank you

Hi Dimitar,

Thank you for your comment.

The way you suggested works very well but I cannot find which item was added to the diagram, so I changed it a bit as follows:

************************************************************

this.radDiagramToolbox1.ListViewElement.DragDropService.PreviewDragDrop += DragDropService_PreviewDragDrop;

int count2 = 0;

        private void DragDropService_PreviewDragDrop(object sender, RadDropEventArgs e)
        {
            DiagramListViewVisualItem dragItem = e.DragInstance as DiagramListViewVisualItem;
            RadDiagramElement dropTarget = e.HitTarget as RadDiagramElement;
            if (dragItem != null && dropTarget != null && dragItem.Data.Key == "Unit")
            {
                e.Handled = true;
                RadDiagramShape shape = dropTarget.Shapes.Last() as RadDiagramShape;
                //shape.DiagramShapeElement.Shape = null;
                //shape.BackColor = Color.Transparent;
                //shape.DiagramShapeElement.Image = dragItem.Image;
                //shape.DiagramShapeElement.ImageLayout = dragItem.ImageLayout;

                shape.Name = "Unit No. " + count2++;

            };
        }

******************************************************

In this case, I can find which item is seleted then an Id is assigned. 

Thank you very much.