Hi,

why I am getting a NullReferenceException when calling:

foreach (UltraTreeNode nodeToMove in nodesToMove)
{
          nodeToMove.Reposition(targetNode.Nodes);
}

StackTrace:

at Infragistics.Win.UltraWinTree.UltraTreeNode.GetColumnSet(NodeColumnRelationship relationship)
at Infragistics.Win.UltraWinTree.UltraTreeNode.get_DisplayColumnSetResolved()
at Infragistics.Win.UltraWinTree.UltraTreeNode.get_IsLastVisibleNodeBeforeNewIsland()
at Infragistics.Win.UltraWinTree.UltraTreeNode.get_NodeSpacingAfterResolvedRaw()
at Infragistics.Win.UltraWinTree.UltraTreeNode.get_ItemHeightResolvedWithSpacing()
at Infragistics.Win.UltraWinTree.VisibleNodesManager.RecalulateScrollSize(Boolean isInReinitialize, Boolean isInRecalculateScrollSize)
at Infragistics.Win.UltraWinTree.VisibleNodesManager.RecalulateScrollSize()
at Infragistics.Win.UltraWinTree.VisibleNodesManager.get_ScrollSize()
at Infragistics.Win.UltraWinTree.UltraTree.get_AllVisibleNodesAreInView()
at Infragistics.Win.UltraWinTree.UltraTree.Infragistics.Win.UltraWinTree.IScrollableControl.MaxSize(ScrollBarType scrollBarType)
at Infragistics.Win.UltraWinTree.ScrollbarControl.RecalcVScroll()
at Infragistics.Win.UltraWinTree.ScrollbarControl.get_VScrollRect()
at Infragistics.Win.UltraWinTree.UltraTree.get_ViewableArea()
at Infragistics.Win.UltraWinTree.UltraTree.get_AllVisibleNodesAreInView()
at Infragistics.Win.UltraWinTree.UltraTree.Infragistics.Win.UltraWinTree.IScrollableControl.MaxSize(ScrollBarType scrollBarType)
at Infragistics.Win.UltraWinTree.ScrollbarControl.RecalcVScroll()
at Infragistics.Win.UltraWinTree.TreeNodesCollection.Remove(UltraTreeNode value, Boolean verifyBound)
at Infragistics.Win.UltraWinTree.TreeNodesCollection.Remove(UltraTreeNode value)
at Infragistics.Win.UltraWinTree.UltraTreeNode.InternalRemove()
at Infragistics.Win.UltraWinTree.UltraTreeNode.Reposition(TreeNodesCollection newNodesCollection, Int32 index)
at Infragistics.Win.UltraWinTree.UltraTreeNode.Reposition(TreeNodesCollection newNodesCollection)
at .....

The tree is not databind

Thanks in advance,

Michael