private void Setline(ListBox target, bool visible, DragEventArgs e)
{
panel1.Visible = visible;
if (target == null)
{
return;
}
Point p = new Point(e.X, e.Y);
p = (target).PointToClient(p);
int indexOfItem = EventBox.IndexFromPoint(p.X, p.Y);
int y = target.PointToClient(p).Y;
int x1 = target.Left;
int x2 = target.Width;
int ih = target.ItemHeight;
int y1 = (int)Math.Min(Math.Round((double)(y / ih)), target.Items.Count) * ih + target.Top;
panel1.Left = x1;
panel1.Top = y1;
panel1.Width = x2;
panel1.Height = 2;
}
private void EventBox_DragDrop(object sender, DragEventArgs e)
{
if (dragsource != sender)
{
ChangeStatelSelection();
return;
}
Point p = new Point(e.X, e.Y);
p = ((ListBox)sender).PointToClient(p);
int indexOfItem = EventBox.IndexFromPoint(p.X, p.Y);
if ((indexOfItem >= 0) && (indexOfItem < EventBox.Items.Count))
{
StatelEvent se = events.ElementAt(indexOfItem);
se.changeid(selectedstatel, evdrag.eventid);
ChangeStatelSelection();
}
Setline(null, false, null);
}