private void btnUp_Click(object sender, EventArgs e)
{
if (lstInstances.SelectedItems.Count == 1)
{
var it = lstInstances.SelectedItems[0];
var oldIdx = lstInstances.Items.IndexOf(it);
ISymbolInstance symRef = (ISymbolInstance)it.Tag;
int idx = _comp.MoveSymbolInstanceUp(symRef);
if (idx >= 0)
{
var item = lstInstances.Items[idx];
lstInstances.Items.RemoveAt(oldIdx);
lstInstances.Items.RemoveAt(idx);
lstInstances.Items.Insert(idx, it);
lstInstances.Items.Insert(oldIdx, item);
}
}
}
