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