private void MoveColumnsDown()
{
for (int i = SelectedVisibleColumns.Count - 1; i >= 0; i--)
{
int origIdx = VisibleColumns.IndexOf(SelectedVisibleColumns[i]);
VisibleColumns.Move(origIdx, origIdx + 1);
}
}
private void MoveColumnsUp()
{
for (int i = 0; i < SelectedVisibleColumns.Count; i++)
{
int origIdx = VisibleColumns.IndexOf(SelectedVisibleColumns[i]);
VisibleColumns.Move(origIdx, origIdx - 1);
}
}