/// <summary>
 ///     Handles the drop event
 /// </summary>
 /// <param name="sourceNode"></param>
 public override void AcceptDrop(BaseTreeNode sourceNode)
 {
     base.AcceptDrop(sourceNode);
     if (sourceNode is StepTreeNode)
     {
         StepTreeNode step = sourceNode as StepTreeNode;
         step.Delete();
         Item.appendSteps(step.Item);
     }
 }
        /// <summary>
        /// Handles the drop event
        /// </summary>
        /// <param name="SourceNode"></param>
        public override void AcceptDrop(BaseTreeNode SourceNode)
        {
            base.AcceptDrop(SourceNode);
            if (SourceNode is StepTreeNode)
            {
                StepTreeNode step = SourceNode as StepTreeNode;
                step.Delete();

                createStep(step.Item);
            }
        }