private void Duplicate() { if (_ListViewMaterials.SelectedItems.Count == 1) { DryingMaterial dryingMaterial = _DryingMaterialsControl.GetSelectedDryingMaterial(); DryingMaterial dm = (DryingMaterial)dryingMaterial.Clone(); dm.IsUserDefined = true; dm.Name = "Copy of " + dryingMaterial.Name; DryingMaterialCatalog.Instance.AddDryingMaterial(dm); } }