[Solved] Moving a node beneath another node

[Bob Jones]

I have a treeview that contains folders that can contain other folders and documents. The databinding is handled by a C# class that returns a dataview and it displays correctly. When I drag a folder or document to another folder, the source node appears after the destination node rather than beneath it. I need it to appear beneath. For example,

-Folder A
---Document X
-Folder B
---Folder C

When I drag X to B it winds up displaying like this:
-Folder A
-Folder B
---Folder C
-Document X

What I want is this:
-Folder A
-Folder B
---Folder C
---Document X

Here is my code:

        SourceNode.Owner.Nodes.Remove(SourceNode);
        if (DestNode.Level == 0)
        {
            DestNode.Nodes.Insert(0, SourceNode);
        }
        else
        {
            switch (e.DropPosition)
            {
                case RadTreeViewDropPosition.Over:
                case RadTreeViewDropPosition.Below:
                    DestNode.InsertAfter(SourceNode);
                    SourceNode.IsDescendantOf(DestNode);
                    break;
                case RadTreeViewDropPosition.Above:
                    DestNode.InsertBefore(SourceNode);

                    break;
            }
        }

The line "SourceNode.IsDecendentOf(DestNode)" seems to have no effect.

Thanks for your help. YOu guys are awesome.

[Yana]

Hi Bob,

You should use 'Over'  RadTreeViewDrop position as it's demonstrated in our online demo here:

case RadTreeViewDropPosition.Over:
   // child
   if (!sourceNode.IsAncestorOf(destNode))
   {
     destNode.Nodes.Add(sourceNode);
   }
   break;

Kind regards,
Yana
the Telerik team

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