Hi
I m adding nodes to the container group and after that i want that the links should be incoming to the container and outgoing from the container.
but for some links it happens and for some it doesn't happens,b'coz null value is assigned in the links which are not properly.......... i am sending the code for reference.
private void btnGroup_Click(object sender, RoutedEventArgs e)

{


diagram.ContainerCaptionHeight = 0;

ContainerNode containerNode = new ContainerNode(diagram);

containerNode.MinimumSize = diagram.Selection.Nodes.GetAt(0).Bounds.Size;

diagram.Nodes.Add(containerNode);

foreach (DiagramNode selectedNode in diagram.Selection.Nodes)

{




int inLinks = selectedNode.IncomingLinks.Count;


for (int i = 0; i < inLinks; i++)


{



DiagramLink link = selectedNode.IncomingLinks.GetAt(i);



if (link != null)



{



link.Destination = containerNode;



}


}





int outLinks = selectedNode.OutgoingLinks.Count;


for (int i = 0; i < outLinks; i++)


{


DiagramLink link = selectedNode.OutgoingLinks.GetAt(i);


if (link != null)


{



link.Origin = containerNode;


}


}





Size size = selectedNode.Bounds.Size;


size.Height = 10;


size.Width = 10;


Rect rect = new Rect(size);


bool rectModified = true;


selectedNode.SetRect(rect, rectModified);


containerNode.Add(selectedNode);



}

containerNode.Caption = "";

containerNode.Margin = 1.0;

containerNode.Foldable = true;

containerNode.Visible = true;

containerNode.UpdateBounds();

containerNode.AutoShrink = true;

containerNode.Brush = Brushes.Transparent;

}