private void ControlsToData()
{
_instrumentDescriptions = null;
if (lvList.Items.Count > 0)
{
_instrumentDescriptions = new List<InstrumentDescription>();
foreach (ListViewItem lvi in lvList.Items)
{
var obj = (InstrumentDescription) lvi.Tag;
_instrumentDescriptions.Add( obj );
obj.ToString();
}
}
}