How to prevent move a child shape of a RadDiagramContainerShape?

[rick]

I'm trying to disable moving a child shape of a RadDiagramContainerShape by override DraggingService as below:

public class MyDragging : DraggingService
    {
        private readonly RadDiagram diagram;

        public MyDragging(RadDiagram graph)
            : base(graph as IGraphInternal)
        {
            this.diagram = graph;
        }

        public override void Drag(Point newPoint)
        {
            if (this.DraggingModels.FirstOrDefault().ParentContainer != null)
            {
                return;
            }
            else
            {
                base.Drag(newPoint);
            }
        }
    }

It does make the child shape immovable. However, after I dragged the child shape, it will be removed from the parent container shape. (subShape.ParentContainer will be null). Then, when I drag the child shape again, it can be moved.

 

How to fix this issue?

[Dinko | Tech Support Engineer]

Hi rick,

To prevent a shape to be drag you can set the IsDraggingEnabled property of the shape to false. In your case, you can set this property of the child shape of the container which you don't want to be dragged. Check the following code snippet.

<telerik:RadDiagram>
    <telerik:RadDiagramContainerShape Content="My Shape" Position="100, 100">
        <telerik:RadDiagramShape Content=" Shape 1" Position="120,140" IsDraggingEnabled="False" />
        <telerik:RadDiagramShape Content=" Shape 2" Position="240,140"/>
    </telerik:RadDiagramContainerShape>
</telerik:RadDiagram>

Give this property a try and let me know if it works in your scenario.

Regards,
Dinko
Progress Telerik

[rick]

wow, works like a charm! thanks very much!