private void ControlsToData()
{
_operatingSystems = null;
if (lvList.Items.Count > 0)
{
_operatingSystems = new List<ControllerOperatingSystem>();
foreach (ListViewItem lvi in lvList.Items)
{
var cntrlOS = (ControllerOperatingSystem) lvi.Tag;
_operatingSystems.Add(cntrlOS);
}
}
}