private void OnFormLoad(object sender, EventArgs e)
{
lv.Columns.Add("Property");
lv.Columns.Add("Value");
lv.View = View.Details;
SizeColumns(lv);
treeLGUs.Nodes.Add("root", "Provinces and LGUs").Tag = "root";
foreach (var item in LGUs.GetLGUTree())
{
var provNode = treeLGUs.Nodes["root"].Nodes.Add(item.Key.ToString(), item.Value.provinceName);
_provinceCount++;
provNode.Tag = "province";
foreach (var lgu in item.Value.lgus)
{
var munNode = provNode.Nodes.Add(lgu.Key.ToString(), lgu.Value);
munNode.Tag = "municipality";
_lguCount++;
}
}
global.LoadFormSettings(this);
}
private void OnDragDrop(object sender, DragEventArgs e)
{
// Retrieve the client coordinates of the drop location.
Point targetPoint = treeLGUs.PointToClient(new Point(e.X, e.Y));
// Retrieve the node at the drop location.
TreeNode targetNode = treeLGUs.GetNodeAt(targetPoint);
// Retrieve the node that was dragged.
TreeNode draggedNode = (TreeNode)e.Data.GetData(typeof(TreeNode));
if (targetNode.Tag.ToString() == "province" && draggedNode.Parent.Text != targetNode.Text)
{
// Sanity check
if (draggedNode == null)
{
return;
}
// Did the user drop on a valid target node?
if (targetNode == null)
{
// The user dropped the node on the treeview control instead
// of another node so lets place the node at the bottom of the tree.
draggedNode.Remove();
treeLGUs.Nodes.Add(draggedNode);
draggedNode.Expand();
}
else
{
TreeNode parentNode = targetNode;
// Confirm that the node at the drop location is not
// the dragged node and that target node isn't null
// (for example if you drag outside the control)
if (!draggedNode.Equals(targetNode) && targetNode != null)
{
bool canDrop = true;
// Crawl our way up from the node we dropped on to find out if
// if the target node is our parent.
while (canDrop && (parentNode != null))
{
canDrop = !Object.ReferenceEquals(draggedNode, parentNode);
parentNode = parentNode.Parent;
}
// Is this a valid drop location?
if (canDrop)
{
// Yes. Move the node, expand it, and select it.
var result = MessageBox.Show($"Are you sure you want to transfer the LGU of {draggedNode.Text} to the Province of {targetNode.Text}?",
"Confirmation needed", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
//if (result == DialogResult.Yes && Landingsite.MoveToLandingSite(sourceTag.Item1, destinationTag.Item1))
if (result == DialogResult.Yes && LGUs.MoveLGuToProvince(int.Parse(draggedNode.Name), int.Parse(targetNode.Name)))
{
targetNode.Nodes.Add(draggedNode);
draggedNode.Nodes.Clear();
targetNode.Expand();
}
targetNode.BackColor = Color.White;
}
}
}
// Optional: Select the dropped node and navigate (however you do it)
treeLGUs.SelectedNode = draggedNode;
}
else
{
MessageBox.Show("Can only move an LGU to a different province", "Validation error", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
