删除指定目录内的文件

public void delfile(string path)
        {
            if (Directory.Exists(path))
            {
                foreach (string d in Directory.GetFileSystemEntries(path))
                {
                    if (File.Exists(d))
                        File.Delete(d);
                    else
                        delfile(path);
                }
                Directory.Delete(path, true);
            }
        }