private void EventTab_DragDrop(object sender, DragEventArgs e)
{
TaskButton selectedButton = (TaskButton)e.Data.GetData(typeof(TaskButton));
EventTab _destination = (EventTab)sender;
EventTab _source = (EventTab)selectedButton.Parent;
if (_source != _destination)
{
_destination.Controls.Add(selectedButton);
_destination.tasks.Add(selectedButton.Task);
_destination.Height += 45;
int index = _destination.Controls.Count;
_destination.Controls.SetChildIndex(selectedButton, index - 2);
_destination.Invalidate();
_source.Invalidate();
dragController = true;
}
else
{
dragController = true;
}
_destination.Controls.Remove(dragPanel);
}