/// <summary>        /// 递归读取指定路径下的所有文件信息        /// </summary>        /// <param name="path"></param>        /// <param name="node"></param>        private void DIGuiGetFile(string path, TreeNode node)        {            if (!Directory.Exists(path)) return;            //目录下的文件、文件夹集合            string[] diArr = System.IO.Directory.GetDirectories(path, "*", System.IO.SearchOption.TopDirectoryOnly);            string[] rootfileArr = System.IO.Directory.GetFiles(path);            //文件夹递归            for (int i = 0; i < diArr.Length; i++)            {                //增加父节点                string fileName = Path.GetFileNameWithoutExtension(diArr[i]);                node.Nodes.Add(fileName);                DIGuiGetFile(diArr[i], node.Nodes[i]);            }            //文件直接添加            foreach (string var in rootfileArr)            {                if (var.IndexOf("wav") >= 0)                {                    node.Nodes.Add(var, Path.GetFileNameWithoutExtension(var));                }            }        }