private void buttonDuplicate_Click(object sender, EventArgs e) { if (listViewAssets.SelectedItems.Count == 0) { return; } archive.DuplicateSelectedAssets(comboBoxLayers.SelectedIndex, out List <uint> finalIndices); comboBoxLayers.Items[comboBoxLayers.SelectedIndex] = archive.LayerToString(comboBoxLayers.SelectedIndex); SetSelectedIndices(finalIndices, false); }