/// <summary>
/// Drag and drop node
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UserFactoryDetails_tv_DragDrop(object sender, DragEventArgs e)
{
if (e.Data.GetDataPresent(typeof(TreeNode)))
{
TreeNode sourceNode = (TreeNode)e.Data.GetData(typeof(TreeNode));
Point point = UserFactoryDetails_tv.PointToClient(new Point(e.X, e.Y));
TreeNode targetNode = UserFactoryDetails_tv.GetNodeAt(point.X, point.Y);
if (IsTreeNodeMovable(sourceNode, targetNode))
{
sourceNode.Parent.ToolTipText = "Changed";
TreeNode dragNode = sourceNode;
UserFactoryDetails_tv.Nodes.Remove(sourceNode);
if (targetNode.Parent == null)
{
targetNode.Nodes.Insert(0, dragNode);
}
else
{
targetNode.Parent.Nodes.Insert(targetNode.Index + 1, dragNode);
}
}
}
}
/// <summary>
/// Enables node dragable
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UserFactoryDetails_tv_DragOver(object sender, DragEventArgs e)
{
TreeNode targetNode = null;
TreeNode sourceNode = null;
if (e.Data.GetDataPresent(typeof(TreeNode)))
{
Point point = UserFactoryDetails_tv.PointToClient(new Point(e.X, e.Y));
targetNode = UserFactoryDetails_tv.GetNodeAt(point.X, point.Y);
sourceNode = e.Data.GetData(typeof(TreeNode)) as TreeNode;
int delta = UserFactoryDetails_tv.Height - point.Y;
if ((delta < UserFactoryDetails_tv.Height / 2) && (delta > 0))
{
TreeNode tn = UserFactoryDetails_tv.GetNodeAt(point.X, point.Y);
tn.NextVisibleNode?.EnsureVisible();
}
if ((delta > UserFactoryDetails_tv.Height / 2) && (delta < UserFactoryDetails_tv.Height))
{
TreeNode tn = UserFactoryDetails_tv.GetNodeAt(point.X, point.Y);
tn.PrevVisibleNode?.EnsureVisible();
}
}
if (targetNode != null)
{
targetNode.Expand();
if (IsTreeNodeMovable(sourceNode, targetNode))
{
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.None;
}
}
else
{
e.Effect = DragDropEffects.None;
}
}
/// <summary>
/// drags factory nodes
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void UserFactoryDetails_tv_ItemDrag(object sender, ItemDragEventArgs e)
{
UserFactoryDetails_tv.DoDragDrop((TreeNode)e.Item, DragDropEffects.All);
}
