Hi,

By default the layout classes do not modify the content of containers. You will have to use the Arrange(DiagramItemCollection) method to explicitly arrange the children of each container. Here's an example:
http://mindfusion.eu/Forum/YaBB.pl?board=fcnet_disc;action=display;num=127351559...

I hope that helps,
Stoyan

Hi, Stoyan.Thank you for reply.
I am new in mindfusion diagraming. For a set of ContainerNodes, if their children nodes are empty.
For example, code is"container.SubordinateGroup.AttachedNodes==null".
How to automatic them?
I know how to layout the TableNodes automatically,I deeply want to know how to layout the ContainerNodes if their children nodes are empty.
Thanks!

Hi,Stoyan. I am sorry to ask your help again,maybe I didn’t explain my problem clearly. Below is my code:

//1.suppose dtProcess is a DataTable, and already contains several data;
//2.loop every row of dtProcess, and every row would generate a ContainerNode;
//3.Rearrange() method want to layout the ContainerNode collection like a tree form;

     private List<ContainerNode> conList = new List<ContainerNode>();
     private TreeLayout conTreeLayout = null;
     private DataTable dtProcess=new DataTable();
     private ContainerNode rootContainer=null;
     int containerID=0;
     .......
     
     private void DrawContainerTree()
       {
           diagram.ClearAll();
           DrawContainerNodes();
           LinksContainers();
           container_Rearrange();
       }
     private void DrawContainerNodes()
       {
           for (int i = 0; i < dtProcess.Rows.Count; i++)
           {
               if (dtProcess.Rows[i]["process"].ToString() != null)
               {
                   ContainerNode conNode = diagram.Factory.CreateContainerNode(xLocation, yLocation, width + 10, height + 10);
                   conNode.Font = new Font("Arial", 4, GraphicsUnit.World);
                   conNode.Caption = dtProcess.Rows[i]["process"].ToString();
                   conNode.Tag = dtProcess.Rows[i]["up_process"].ToString();
                   conNode.Foldable = true;
                   conNode.Folded = true;
                   conNode.AutoShrink = true;
                   conNode.Expandable = true;
                   conNode.AnchorPattern = MindFusion.Diagramming.AnchorPattern.TopInBottomOut;
                   if (conNode.Tag.ToString()=="")
                   {
                       rootContainer = conNode;
                       diagram.Nodes.Add(rootContainer);
                   }
                   //add every ContainerNode to the conList
                   conList.Add(conNode);
                   containerID++;
               }
           }
       }

       private void LinksContainers()
       {
           foreach (ContainerNode upNode in conList)
           {
               if (upNode == null)
                   continue;
               foreach (ContainerNode downNode in conList)
               {
                   if (downNode == null)
                       continue;
                   if (downNode.Tag.ToString() == upNode.Caption)
                   {
                       //if downNode's up_process is upNode, then attach the downNode to the Group of upNode
                       downNode.AttachTo(upNode, AttachToNode.BottomCenter);
                       //link downNode and upNode
                       DiagramLink link = diagram.Factory.CreateDiagramLink(upNode, downNode);
                   }
               }
           }
       }
      
       private void Rearrange()
       {
          conTreeLayout = new TreeLayout(rootContainer, TreeLayoutType.Centered, false,
                       TreeLayoutLinkType.Cascading3, TreeLayoutDirections.TopToBottom,
                       levelDistance + 5, nodeDistance + 2, false, new SizeF(1, 1));

          conTreeLayout.Arrange(diagram);
          diagram.ResizeToFitItems(1, true);
       }
      
       At last: all the ContainerNodes are empty, it just like a Node,contain none of children nodes in it.I want to arrange them automatically
       and being a tree.
       Thans a lot!

I see your result,but that is not my intention.I send you an e-mail,which include my quetions and intention. My email address is"bailiang908@hotmail.com".I need your help and look forward to your reply
Thanks a lot!

Ok then, if you are using groups so that whole branches in the tree move when the user drags a node, call the AttachTo method after arranging the containers. Containers are just nodes with associated groups (they internally call AttachTo), and since the layout classes skip the containers' groups by default, you will have to call AttachTo after running the layout.

I hope that helps,
Stoyan

If you need to call the layout method more than once, I suppose you will also need some DetachContainers method that should run before calling TreeLayout.Arrange to remove the groups.

I hope that helps,
Stoyan

Hi,Stoyan.I call the AttachTo method after arranging the containers,it works very well.However,when I move or drag one contianer
to a new position, the whole branches belong to it wouldn't move at the same time,just the link is moving disorderly.Futhermore,
other links which are connecting other nodes would disappear. In the TableNode case, this problem does not occur.
Why does this problem happen? Could you help me to solve it? Thanks!