IntegralUI TreeListView User Guide - Lidor Systems

.IntegralUI.Lists.TreeListViewNode));
// Get the target node (the one that is currently hovered)
LidorSystems.IntegralUI.Lists.TreeListViewNode targetNode =
this.treeListView1.GetNodeAt(mousePos);
// Suspend the treelistview layout to increase performance
this.treeListView1.SuspendUpdate();
// In Copy operation, create a clone node and then add it to the
target
if (e.Effect == DragDropEffects.Copy)
node =
(LidorSystems.IntegralUI.Lists.TreeListViewNode)node.Clone();
// Remove the node from its current parent node collection
else
node.Remove();
end
control
mousePos);
}
}
// If there is no target node, then add the dragged node at the
if (targetNode == null)
this.treeListView1.Nodes.Add(node);
else
{
// Get the index of the dropped node in target TreeListView
}
int newIndex = this.treeListView1.GetDropPos(targetNode,
if (newIndex >= 0)
{
if (targetNode.Parent != null)
targetNode.Parent.Nodes.Insert(newIndex, node);
else
this.treeListView1.Nodes.Insert(newIndex, node);
}
else
targetNode.Nodes.Add(node);
// Resume the treelistview layout and update the control
this.treeListView1.ResumeUpdate();
private void treeListView1_QueryContinueDrag(object sender,
QueryContinueDragEventArgs e)
{
Point mousePos = this.treeListView1.PointToClient(Control.MousePosition);
// Cancel the drag operation when the mouse cursor leaves the TreeListView
space
if (!this.treeListView1.ClientRectangle.Contains(mousePos))
e.Action = DragAction.Cancel;
}
50