void flowLayoutPanel1_DragDrop(object sender, DragEventArgs e)
{
DraggableUserControl data = (DraggableUserControl)e.Data.GetData(typeof(DraggableUserControl));
FlowLayoutPanel _destination = (FlowLayoutPanel)sender;
FlowLayoutPanel _source = (FlowLayoutPanel)data.Parent;
if (_source != _destination)
{
// Add control to panel
_destination.Controls.Add(data);
data.Size = new Size(_destination.Width, 50);
// Reorder
Point p = _destination.PointToClient(new Point(e.X, e.Y));
var item = _destination.GetChildAtPoint(p);
int index = _destination.Controls.GetChildIndex(item, false);
_destination.Controls.SetChildIndex(data, index);
// Invalidate to paint!
_destination.Invalidate();
_source.Invalidate();
}
else
{
// Just add the control to the new panel.
// No need to remove from the other panel, this changes the Control.Parent property.
Point p = _destination.PointToClient(new Point(e.X, e.Y));
var item = _destination.GetChildAtPoint(p);
int index = _destination.Controls.GetChildIndex(item, false);
_destination.Controls.SetChildIndex(data, index);
_destination.Invalidate();
}
}
private void Form1_Load(object sender, EventArgs e)
{
Size s = new Size(flowLayoutPanel1.Width, 50);
DraggableUserControl pgb;
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
pgb.Anchor = AnchorStyles.Left | AnchorStyles.Right;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
}
private void Form1_Load(object sender, EventArgs e)
{
Size s = new Size(flowLayoutPanel1.Width, 50);
DraggableUserControl pgb;
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
pgb.Anchor = AnchorStyles.Left | AnchorStyles.Right;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
pgb = new DraggableUserControl();
pgb.Padding = new Padding(5);
pgb.Size = s;
this._items.Add(pgb);
this.flowLayoutPanel1.Controls.Add(pgb);
}