就我注释的2 句，不执行就跳了。也不知道问题出在哪啊

private void RenameItem(ListViewItem item, string newName)
        {
            try
            {
                string oldPath = null;
                string newPath = null;
                if (item.SubItems[2].Text.Trim() == "文件夹")
                {
                    if (newName == item.Text)
                    { MessageBox.Show("文件名相同,请修改!"); return; }
                    oldPath = item.Tag.ToString();
                   // newPath = Directory.GetParent(item.Tag.ToString()).FullName + "\\" + newName;
                   // Directory.Move(oldPath, newPath);
                }
                else
                {
                    if (newName == item.Text)
                    { MessageBox.Show("文件名相同,请修改!"); return; }
                    oldPath = item.Tag.ToString();
                    newPath = Path.GetDirectoryName(oldPath) + "\\" + newName; //GetParent(item.Tag.ToString()).FullName + "\\" + newName;
                    File.Move(oldPath, newPath);
                }
            }