private void deleteToolStripMenuItem_Click(object sender, EventArgs e) { try { TreeNode tn = folderTreeView.SelectedNode; if (tn == null) { return; } string path = ((FileSystemInfo)tn.Tag).FullName; LocalDirectory.DeleteFilesOrFolders(new string[] { path }); tn.Remove(); } catch (Exception ex) { MessageBox.Show(ex.Message); } }