private async void listBoxFilesExplorer_DoubleClick(object sender, EventArgs e) { try { string selectedFolder = listBoxFilesExplorer.SelectedItem.ToString(); // MessageBox.Show(selectedFolder); string[] receivedFolders = await cl.GetFolderContent(selectedFolder); // MessageBox.Show(receivedFolders[1]); UpdateListBoxWith(receivedFolders); } catch (Exception ex) { MessageBox.Show(ex.Message); } }